Answers
Answer:
A
Explanation:
A shows process of fertilization where sperm and egg meet to form zygote which is genetically different than sperm or the egg.
Related Questions
Define Arteries.
Class 10 - NCERT Book - only references from this book, answers from the internet will be reported. No spam!!!
Answers
Answer:
[tex]{\boxed{\boxed{\tt { Arteries}}}} \ [/tex]
✏ Arteries are the vessels that carry blood away from the heart to various organs of the body.Since, the blood emerges from the heart under high pressure, the arteries have thick, elastic walls.
[tex] \huge \boxed{\mathbb{QUESTION} \downarrow}[/tex]
Define Arteries.Class 10 - NCERT Book.[tex] \huge \boxed{\mathfrak{Answer} \downarrow}[/tex]
According to the NCERT book (the Indian CBSE school textbooks) :-
Arteries are defined as the vessels that carry blood away from the heart to various organs of the body. The arteries have thick, elastic walls because the blood emerges from the heart under high pressure.Compare the punnet squares you constructed in Activity 4, "Breeding Corn", with the punnet squares you constructed in this activity. By answering the following questions, show how the possible outcomes of a cross for one trait help analyze two traits.
A. How did you need to change the punnet square to consider two traits?
B. How would you need to change the punnet square if you were to consider three traits?
Answers
Punnett squares represent the possible genotypes of the offspring according to the parental's gamete combinations. The number of gametes depend on the number of alleles and traits considered. A) New rows and columns were added to the square because each parent contributed with four types of gametes (4 rows and 4 columns). B) The square would be constructed with eight rows and eight columns.
What is a Punnett square?
The Punnett square is a graphic representation that shows the different types of gamete combinations according to the alleles involved in a cross.
Punnett squares are composed of columns and rows in which all the different potential gametes are placed.
columns represent one of the parental gametes, and rows represent the other parental's gametes.The intersection between each column and row suggests a possible genotype among the offspring.
The number of columns and rows will depend on the number of genes involved in the cross. We can use the formula 2ⁿ to figure out how many gametes are possible (2 is the number of alleles, and n is the number of genes). Assuming diallelic genes,
If we consider only one gene, two types of gametes are possible (2¹). If we consider two genes, four types of gametes are possible (2²). If we consider three genes, eight types of gametes are possible (2³)
Punnett squares shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.
In the exposed example, we need to compare a punnett square in which we consider only one gene with a punnett square in wich two genes are considered.
From activity 4: Punnett square
Cross: Purple with yellow
Parentals) PP x pp
Gametes) P P p p
Punnett square)
P P
p Pp Pp
p Pp Pp
F1) 100% purple kernels, Pp.
Cross: Heterozygous purple kernels from F1
Parentals) Pp x Pp
Gametes) P p P p
Punnett square)
P p
P PP Pp
p Pp pp
F2) 75% Purple (PP + Pp) and 1/4 yellow kernels (pp)
In these crosses, we only consider one diallelic gene that expresses complete dominance.
Punnett squares are composed of two columns and two rows in which both types of gametes are located.
Now, we need to consider two genes (P and S), which means four alleles are involved and four type of gametes are possible.
Cross: Between two dihybrid individuals
Parentals) PpSs x PpSs
Gametes) PS, Ps, pS, ps PS, Ps, pS, ps
Punnett square)
PS Ps pS ps
PS PPSS PPSs PpSS PpSs
Ps PPSs PPss PpSs Ppss
pS PpSS PpSs ppSS ppSs
ps PpSs Ppss ppSs ppss
F1)
9/16 individuals are expected to express both dominant traits (PPSS, PpSS, PPSs, PpSs)3/16 individuals are expected to express only one dominant trait (PPss, Ppss)3/16 individuals are expected to express the other dominant trait (ppSS, ppSs) 1/16 individuals are expected to express both recessive traits (ppss)Now, we need to compare Punnett squares from activity 4 (one trait) with this new Punnett square (two traits), and answer the questions,
A. How did you need to change the punnet square to consider two traits?
Since we consider two traits, we need to add rows and columns according to the possible gametes. The new punnett square must have four columns and four rows (2ⁿ = 2² = 4).
Remember that all the possible gametes depend on the number of possible allelic combinations.
B. How would you need to change the punnet square if you were to consider three traits?
If we consider three traits, we need to construct a Punnett square with eight columns and eight rows (2ⁿ = 2³ = 8).
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On Christmas Eve of 1998, the Ohio State Health Department announced that two elderly people had died during the previous six weeks, apparently after ingesting tainted meat. Ten additional non fatal cases were reported in the state during this period. The state epidemiologist was aware of a national outbreak of a disease with the symptoms seen in these cases. The symptoms included fever and muscle aches, and often diarrhea and nausea. Occasionally, the central nervous system was affected, resulting in confusion, stiff neck, headache, and convulsion. The nationwide outbreak affected approximately 50 people, with a particularly high infection rate in pregnant women and a significant number of deaths among fetuses. The Centers for Disease Control and Prevention (CDC) issued a list of people who were at particular risk for the disease. These included pregnant women, newborns, people with weakened immune systems, and the elderly. The CDC and the U.S. Department of Agriculture suspected pre packaged meats, such as hot dogs and cold cuts, as the source of the outbreak.
Required:
a. What is the most likely cause of the disease?
b. Why is this infection associated with processed meats, but not usually with hamburger or cuts of meat including pork, beef, or chicken?
Answers
Answer:See explanation
Explanation:
a. What is the most likely cause of the disease?
The most likely cause of the disease is Listeria monocytogenes.
b. Why is this infection associated with processed meats, but not usually with hamburger or cuts of meat including pork, beef, or chicken?
The Listeria monocytogenes gets into ones body through either food or drink. Under refrigeration, it can survive well and reproduce. In a situation whereby the meats that have been infected isn't properly heated well, then the bacterium will survive. On the other, hamburger or cuts of meat including pork, beef, or chicken are property heated well and therefore kills the bacteria.
HELP ASAP
How did the environment affect the populations of peppered moths in the 1800s in
London?
Because of the soot covering everything, the dirtier darker moths will be eaten
less often, allowing them to reproduce and pass their genes on to the next
generation.
Because of the soot covering everything, the lighter colored moths will be eaten
less often, allowing them to reproduce and pass their genes on to the next
generation.
The environment did not affect the peppered moths-- the populations are still
the same.
Answers
Answer:
??????????????????????????????????
Explanation:
QUESTION 1
Life has gotten much better in the last 100 years, yet people are not any happier. This statement characterizes the...
a. escape from freedom
b. the point/counterpoint phenomenon
c. the paradox of progress
d. modern society
Answers
This statement is characterized by the concept of the paradox of progress, as shown in option C..
What is the paradox of progress?It is a psychosocial concept.It's the term that describes bad results coming from good processors.Progress is something good and desired by all communities. This is because all people want to progress in their social and individual lives. After all, the results of progress tend to be good, uplifting, and promote many good things.
However, there is a paradox where progress triggers poor results in elements that worked better in the past. An example of this can be seen in communities that progressed over time but emotionally regressed, keeping more people unhappy than before.
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Why is the following sentence false?
Acetyl CoA is a versatile molecule that participates in various metabolic pathways such as fatty acid synthesis, glycolysis, Krebs cycle, beta-oxidation, urea cycle, synthesis of cholesterol and ketone bodies.
Answers
Answer:
Please dont delete
Explanation:
Hello. I am sorry that I can not answer your question but I am doing this so I can get answers of my own. I appreciate your understanding and I hope you get your answer soon. Good luck!
Part II Use the following words and phrases to fill in the blanks with the best possible match. You will use several of the terms more than once. ecosystem primary succession diversity secondary succession lichens pioneer organisms succession climax community 1. A forest of pine trees is burned over a 10 mile area when lightning strikes a tree. In the spring, a few seedlings are beginning to sprout. ___________________________________ 2. A glacier has scraped all soil from a rocky area. As it slowly retreats, some of the rock is broken down by weathering. Some moss begins to grow. ___________________________________ 3. A small symbiotic organism secretes acid into the rock to anchor itself in place. ___________________________________
Answers
Answer:
1. A forest of pine trees is burned over a 10 mile area when lightning strikes a tree. In the spring, a few seedlings are beginning to sprout → secondary succession.
2. A glacier has scraped all soil from a rocky area. As it slowly retreats, some of the rock is broken down by weathering. Some moss begins to grow → primary succession.
3. A small symbiotic organism secretes acid into the rock to anchor itself in place → lichens - pioneer organisms.
Explanation:
The succession is the colonization of an open area and includes all the changes the area suffers since then. It is a sequence of events that involves the establishment of different species through time. A sequence of changes that occur in a community temporally and spatially. Local colonizations and extinctions occur while ecosystems evolve at a more complex level.
Ecological succession occurs in stages. The first stages are represented by communities of simple trophic levels and few species. With time, the communities go through different stages. They transform into more complex ecosystems that are much richer in diversity, showing more interaction among the different species that compose it. The final stage is known as the climax and represents a mature and stable system.
While the community is going through these changes, many species get extinct while many others get to emerge and survive. It occurs overlapping of different taxonomic groups that interact with each other competing or beneficiating other groups.
There are two types of succession, primary and secondary, depending on the magnitude of the alteration.
Primary succession refers to an open space with no living organisms, such as a bare rock exposed due to a retreating glacier, a volcanic activity, or an intense fire. If previous species were inhabiting this area, after the event, nothing is left.In those cases where there is an alteration or disturbance at a site that opens the area, it allows new species to grow. With time, new species arrive and manage to establish again. The order of the establishment depends on the strategies of each of the species to survive.
First, pioneer species arrive. These are the first inhabitants, mostly lichens or plants with the capability of surviving in such an environment. Only a few pioneers can establish in the open space. Pioneers modify the habitat, making it more suitable for the establishment of later species, converting rock into fertile soil. As conditions get better, new species arrive like grasses. Grasses and pioneers keep modifying the soil, making it better with time. New species arrive. Habitat modification keeps on going while new species establish. They produce shadows, alter the temperature, and humidity, fertilizing the soil, competing for resources. Competition becomes more frequent between species. The first species are eventually eliminated by competition, but new species keep appearing and competing for resources. This sequence continues until the commuting reaches a climax, becoming stable and lasting for hundreds of years until another disturbance occurs.
Secondary succession refers to an open space left after a perturbation that might have removed all or some of the vegetable forms of life that used to inhabits that area. But the soil remains good and fertile. It has spores and seeds that will emerge when the conditions are appropriate. The disturbance occurred but vegetable species have strategies to survive the event and grow once it´s over. Pine trees are adapted to fire, and some species need fire to germinate.Which of these materials are organic? (Select all that apply.)
A. rock
B. leaf
C. clay
D. bacteria
(PICK MORE THAN ONE)
Answers
Answer:
All of them
Explanation:
Answer:
B. leaf and
D. bacteria
Explanation:
If a person has one dominant and one recessive trait for a gene, the allele combination is …
Question 10 options:
a)
Purebred
b)
Hybrid
c)
Recessive
Answers
B) hybrid
Because the genotype is heterozygous
What does genetic modification do
Answers
Explanation:
Genetic modification is the process of altering the genetic makeup of an organism. This has been done indirectly for thousands of years by controlled, or selective, breeding of plants and animals. Modern biotechnology has made it easier and faster to target a specific gene for more-precise alteration of the organism through genetic engineering.
Hope Helps!Answer:
Please read below:
Explanation:
Genetic modification, also known as genetic engineering or genetic manipulation, is the process of altering the genetic makeup of living organisms. This is done by manipulating the DNA of a living organism to create a desired outcome. It involves the introduction of foreign DNA into the organism, often from another species, in order to produce a desired trait. It is used in a wide range of applications, ranging from agriculture to medicine.
In agriculture, genetic modification is used to create crops with heightened resistance to pests, diseases, and adverse environmental conditions. It can also be used to increase crop yields, improve nutritional value, and reduce the use of pesticides and fertilizers.
In medicine, genetic modification is used to create vaccines, improve the efficacy of existing drugs, and create treatments for genetic diseases. It is also used to create healthier food and beverages, as well as to create new materials with improved properties.
In biotechnology, genetic modification is used to create new products for use in research and industry. These products are often used to study diseases, develop new drugs, and create bioplastics and biofuels.
Genetic modification has been controversial since its inception, as it has been used to create genetically modified organisms (GMOs). These organisms, created through genetic modification, have the potential to disrupt natural ecosystems, as well as to cause health problems in humans. For this reason, the use of GMOs is heavily regulated in many countries, and the public is often divided on the issue.
Overall, genetic modification has the potential to revolutionize the way we produce food, create medicines, and develop new products. However, it is important to remember the ethical and environmental considerations that must be taken into account when using this technology.
A radioactive element has a half-life of 2,000 years. If a sample of this element begins with a mass of 100 grams, how long would you have to wait for the mass to decrease to 25 grams?
Answers
Therefore, a half-life of 2000 years saying that 100 grams will decompose to 50 grams in 2000 years. That 50 g will decompose to the requested 25 grams in another 2000 years. 2,000 + 2,000 = 4,000 years are required.
Describe element.Elements are substances that cannot further breakdown as a result of any chemical reaction. There are a certain number of protons in each element's atom.
Which elements are important?Since they make the organic compounds that are present in all living things, chemical elements are crucial to living things. Carbon is the primary element in all organic compounds, including lipids, nucleic acids, proteins, and carbohydrates.
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Sentence Arrange - Put the steps of DNA replication in order by writing a number in the space before each statement. _____Two new molecules of DNA are created. _____DNA polymerase attach the free-floating nucleotides to the exposed nitrogen bases. _____ Helicase begins to break the hydrogen bonds between nitrogen bases. _____DNA is stabilize by the enzyme topoimerase. _____DNA ligase mends Okazaki fragments.
Answers
Answer:
1. Helicase begins to break the hydrogen bonds between nitrogen bases.
2. DNA is stabilized by the enzyme topoisomerase.
3.DNA polymerase attaches the free-floating nucleotides to the exposed nitrogen bases.
4. DNA ligase mends Okazaki fragments.
5. Two new molecules of DNA are created.
Explanation:
Replication is a cellular mechanism by which a DNA molecule is used as template to synthesize two identical DNA molecules, and then each daughter cell receives one DNA molecule during cell division. First, DNA unwinds at dynamic structures called replication forks: a helicase enzyme opens up the double helix of the DNA at the replication fork by breaking hydrogen bonds that hold complementary DNA strands together. Subsequently, a topoisomerase enzyme removes positive supercoils generated in front of the replication fork. In the next step, a DNA polymerase extends primers (i.e., short RNA sequences that serve as templates for the starting point of replication) by adding nucleotides to the 3' end of the growing strand. The replication continues in the 5' to 3' direction on the leading strand, while the strand of the DNA that runs 5' to 3' away from the replication fork (known as the lagging strand) must be synthesized in fragments called Okazaki fragments. Subsequently, a DNA ligase enzyme facilitates the joining of the Okazaki fragments by forming phosphodiester bonds between nucleotides, thereby resulting in a continuous lagging strand. Finally, replication ends when converging replication forks meet.
no links plz help
The trees are very tall. They restrict sunlight from reaching the ground. As their population decreased from year 1 to year 5, scientists noted that a low-growing invasive plant species increased in number. Why do you think this increase occurred?
Answers
Answer:
the sunlight was finally able to reach the ground allowing for the invasive species to grow
Explanation:
Answer:
The trees and the invasive plant species are green plants that need sunlight to photosynthesize. As the number of trees decreased, more sunlight reached the ground. This situation increased the chances of survival of the invasive plant species. So, its population increased.
Explanation:
answer on Edmentum/Plato
A coefficient tells you how many ___
there are.
Answers
a change in position in relation to a reference point is:
a. acceleration
b. displacement
C. speed
d. velocity
Answers
Answer:
it would be b. displacement
Smooth
Smooth
O
Smooth
A.
Smooth
o
Smooth
X
X
Wrinkled
It is true only in the plant world.
Smooth
Smooth
Based on the information above, what would a geneticist say about the example of the
pea plants?
Smooth
Wrinkled
B.
It is based purely on chance.
C. It has no relationship to human transmission of traits.
D. It helps show transmission of traits from parents to offspring.
E. It is too dated to have application in today's world.
Answers
Mendel's tests on the pea plant are still relevant today since they demonstrate how traits are passed down through generations, hence option D is correct.
What are pea plant traits?The pea experiment is frequently used in classrooms because peas have distinguishable qualities and it is relatively straightforward to analyze how these traits are inherited.
When a person possesses a dominant characteristic and is heterozygous for that trait, the descendants of that person might also possess a recessive trait.
Therefore, It helps show the transmission of traits from parents to offspring.
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H20
Given the chemical formula, how is this substance MOST LIKELY classified?
A. Atom
B. Compound
C. Both atom and compound
D. Neither atom nor compound
Answers
A woman and man have approached you for genetic counseling and are concerned about a hereditary form of deafness in their family. Both have normal hearing and there are no children. The woman's father has autosomal dominant sensory-neural deafness. Assume he is heterozygous. This hearing impairment displays onset at about age 10, and penetrance appears to be about 70%. There is no family history of deafness among the man's relatives. What is the probability that the woman is a carrier of the deafness allele
Answers
Answer:
35% is the probability that the woman is a carrier of the deafness allele
Explanation:
Both man and woman have normal hearing
Woman's father has autosomal dominant sensory-neural deafness - Dd
Genotype of heterozygous Woman's father = Dd
Let us assume that woman’s mother has normal hearing = dd
Dd * dd
Dd, Dd, dd, dd
Two deaf and two normal offspring.
Since the penetration is of 70%, the probability of woman being a carrier is
½ * 70% = 0.35
ITS A TIME LIMIT PLZ HURRY
Answers
Answer:
Answer D. Scratching it with other materials
Explanation:
Let's start eliminating some answers
Answer A; If you hit an object with a hammer, you will just figure out if that object can be broken with a certain amount of force. In most cases, this will not be helpful.
Answer B; When putting a material in an acid, many things could happen. This things that happen are called chemical reactions. Not every material will have a chemical reaction so this step could be useless.
Answer C; Chipping a piece off of a material will not grant you much information. Yes if may be easier to experiment will a smaller piece but the action by it's self is not useful.
Answer D; Scratching a material will another material can be very helpful. If you have two materials, labeled A and B, you can find out the Mohs hardness scale. If A is damaged by B, the hardness of A is less than B and vise versa. This can be very helpful when identifying materials.
So answer D makes the most sense
Without genetic variation, the mechanisms of evolutionary change will not occur. There are several sources of genetic variation
within a breeding population: sexual reproduction, mutation, and gene flow. Specifically, sexual reproduction contributes to
genetic variation and as a result, evolution, through recombination. Describe recombination and analyze how it contributes to
genetic variability. Choose ALL that apply.
Answers
Answer: A, B, and D
Explanation: I just took the test
When two gametes combine during fertilization to produce children with distinct DNA combinations, this variety is amplified even more, hence a, b, d is the correct option.
What is genetic variation?Crossing over and independent segregation occurs during meiosis I, DNA is exchanged between homologous chromosomes during prophase I when cells cross over.
New allele combinations are produced as a result, chromosomes can arrange themselves in a variety of ways on the metaphase plate, and this process is known as independent segregation.
In metaphase I, this happens, independent segregation but not crossing across occurs during meiosis II.
Therefore meiosis creates variation in the organism which leads to changes during evolution, hence a,b,d is the correct option.
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su cuerpo esta constituido por células a) aubacterias b) eucariotas c) ptocariotas d) Arqueobacteria
Answers
Answer:
your body is made up of cells a) aubacteria b) eukaryotes c) ptokaryotes d) Archeobacteria
Explanation:
because the biggest cell in your body is the brain so it needs all the brain cells in your mind to make the brain makes sense
If a scientist wanted to follow Mendel’s experiment with a different kind of plant, which type of plant would she examine?
Answers
Answer: Pure line plant
Explanation:
Pure line plants are those plants that are used for breeding and selecting organisms with a desire trait to a number of generations until the wanted trait is established. Mendel had chosen pea plant for his experiments and that was a pure line species. It was bred to many generations so as to obtain the desired trait in successive generation. The plants were utilized to study the laws of inheritance. Also it was noticed that one trait being recessive in one generation will be expressive in other generation.
give any character of gene?
Answers
Answer:
A gene is composed of a sequence of nucleotides, which are the building blocks of DNA. Each gene contains the information needed to construct a specific protein, which performs a specific function in the body. Genes are passed from parent to offspring and contain the instructions that make each species unique.
Explanation:
Today we will start an investigation to see how different kinds of seeds are affected by different levels of ____, _______, meaning different concentration of salt (sodium chloride, NaCl) dissolved in water
Answers
Explanation:
salinity
from
http://sc6thgradescience.weebly.com/uploads/3/0/9/8/30980165/week_8_plant_booklet_new_standards.pdf&ved=2ahUKEwj0-7jr-LrwAhXPQs0KHVFnDNIQFjAAegQIAxAC&usg=AOvVaw26-9xULp2xjBb4NLgg8Arc
Which of the following is NOT a place that releases enzymes for digestion?
Answers
as in the mouth the two enzymes in your saliva are called amylase and lipase, and digestive enzymes are mostly produced in the stomach and small intestine.
Answer: D. esophagus
Explanation: Because esophagus uses muscles and does not use enzymes to digest. It only transports food to the stomach and then goes further into the digestive system.
Why not your mouth because it uses the enzyme Amylase, which helps break down complex carbohydrates. It is also produced by the mouth. Lipase, which breaks down fats. Protease is a protein-breaking enzyme that breaks down proteins.
Your stomach also uses enzymes as your intestine.
I hope I helped!
What did you learn about invertebrates and vertebrates?
Answers
Answer:
Vertebrates have a skeletal structure with a spinal column or backbone. Invertebrates have no backbone, while vertebrates have a well-developed internal skeleton of cartilage and bone and a highly developed brain that is enclosed by a skull. ... Due to lack of a supportive system, a majority of invertebrates are small.
Explanation:
Testosterone does which of the following?
OA. Develops accessory sex organs.
ОВ.
AIDS in spermatogenesis.
OC. Controls sex drive.
OD
All of the above
Answers
Number of matings of roan-coated cows and roan coated bulls resulted in the following
Answers
When red cattle breed with red cattle, the resultant offspring show both red and white fur, resulting in a mixed coat pattern called "roan."
What is a roan bull?The roan pattern, normally in Shorthorn cattle, is inherited as a heterozygous genotype. Roaming is usually the intermixing of two dissimilar colored hairs - black and white make a blue roan while red and white make a red roan.
The roan coat color in livestock species is distinguished by a mixture of white and tint hair in cattle, If it is a breed that has the roan color pattern, like a Shorthorn, then yes it can be pure-blooded. Or it can be a cross-breed with the roan color pattern. Roan is a color, not a breed.
So we can conclude that Roan" mentions a horse coat color pattern characterized by a mixture of colors.
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What do you think would happen if you raised the temperature more? Why would it be a bad idea?
Answers
Answer:
because eventually the population of fish will decrease because they are having a hard time breathing in such hot temperature.
Explanation:
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The map shows the locations in the United States of farmland and forest. Why are these natural resources important? (I know my finger is in the camera)
Answers
The map shows the locations in the United States of farmland and forest. These natural resources are very important.
What shows the modernization on the surrounding natural environment?The development shows a significant effect of modernization on the surrounding natural environment and many ancient forests were completely destroyed before legislature was implemented to protect the environment.
Since people didn't care about the trees. They would use the wood for anything, from papek making to making toys and eating utensils as the development shows a significant effect of modernization on the surrounding natural environment.
Therefore, The map shows the locations in the United States of farmland and forest. These natural resources are very important.
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