Answer: Speciation.
Explanation:
Answer:
The formation of two species from one original species is known as SPECIATION
Explanation:
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During fetal development, the gubernaculum guides the testis through the _____________________ canal.
During fetal developement, the gubernaculum guides the testis through the inguinal canal in the groin
What is Fetal Developement?Fetal developement is a stage in child forming process, it basically involves the formation of the embryo and also the foetus.
It should be noted that the gestation period for humans is nine months.
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Which statement best describes why a cell spends the majority of its time in interphase
The cell spends the majority of its time in interphase because it is the phase where adequate preparation for nuclear division occurs.
What is cell cycle?The cell cycle refers to the series of processes that leads to the formation of daughter cells from a single cell.
The cell cycle involves two phases majorly:
interphasemitotic phaseThe interphase is also called the resting phase of the cell cycle. It is the phase where the cell performs the following actions in preparation for nuclear division:
DNA replicationcell enlargementduplication of certain organellesTherefore, the cell spends the majority of its time in interphase because it is the phase where adequate preparation for nuclear division occurs.
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Evolution results from changes in a. Genetic material. B. Mingration patterns. C. Habitats and climate. D. The fossil record
Answer:
Genetic Material
Evolution is a process that causes changes in a population's genetic material through time. The adaptations of organisms to their changing surroundings are reflected in evolution, which can result in changed genes, unique features, and new species.Explanation:
Evolution is the change in the allele frequencies of a population over time.
→ How It HappensNatural selection, as the name implies, occurs naturally rather than artificially. Species with certain traits have a survival advantage, whereas those with characteristics that are detrimental to life may die. The ones that survive continue to breed and pass down their genes, resulting in a shift in the allele frequency of the genes that are important for survival. Individuals with genes that cause survival disadvantages, on the other hand, are unlikely to survive long enough to pass down their genes. Onto the Genetic Drift - It is no longer required that distinct morphologies result in varied survival rates; in most cases, the phenotype has no bearing on survival.
A suggested and testable explanation for an event is called a:.
Answer:
the answer to that question is incident
Explanation:
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What will happen to the frequency of the recessive allele for the hbs gene when there is an outbreak of malaria? the frequency will increase. the frequency will decrease. the frequency will remain constant. it is impossible to predict how the allele frequency will change. the frequency will be cut in half with each generation.
In the outbreak of malaria, the frequency of the recessive allele for the HbS gene will increase. The correct option is A.
What is the HbS gene?HbS is a beta-globin gene known as sickle hemoglobin.
It causes sickle cell disease in humans.
The disease is expressed by two HbS variants or one HbS variant or one another beta-globin gene.
Malaria is caused by the plasmodium parasite, which is present in the saliva of the mosquito.
Thus, the correct option is A, the frequency will increase.
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Answer:
A. SORRY IF IM WRONG
Explanation:
2022
Mendel crossed a true breeding yellow seed pea plant with a true breeding green seed pea plant and the resulting F1 offspring were all ____________.
The resulting F1 offspring of a cross between a true breeding yellow seed pea plant with a true breeding green seed pea plant is 100% yellow.
What is Mendelian cross?Gregor Mendel is referred to as the father of genetics because of his immense contribution to inheritance.
He crossed a dominant yellow pea plant with a recessive green pea plant as follows:
YY (true breeding yellow seed) × yy (true breeding green seed)
The F1 offsprings (Yy) will all possess yellow seeds because yellow trait is dominant over the green.
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blank uses moving air and doesnt pollute the atmosphere. blank uses dead plant matter, and burning it releases carbon emissions into the atmosphere
Answer:
WInd energy uses moving air and doesn't pollute the atmosphere. Biomass energy uses dead plant matter, and burning it releases carbon emissions into the atmosphere.
Explanation:
Wind turbines use moving air and do not pollute the atmosphere. Decomposers use dead plant matter, and burning it releases carbon emissions into the atmosphere.
What do you mean by Atmosphere?An Atmosphere may be defined as the layers of gases surrounding a planet or other celestial body.
When dead plant matter decays, it creates a layer of organic carbon which later becomes oil, coal, and natural gases. Wind turbines make the wind artificially with the help of air which facilitates rotating turbines.
Therefore, it is well described above.
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How does pollution affect seed germination?
Explanation:
the organic and inorganic contaminates degrade the water quality and make it polluTed which affect directly on seed germination and plant growth
The dna polymerase extends the primers into a new dna strand by.
Answer:
adding nucleotides one by one
Explanation:
A typical primer is about five to ten nucleotides long. The primer primes DNA synthesis, i.e., gets it started. Once the RNA primer is in place, DNA polymerase "extends" it, adding nucleotides one by one to make a new DNA strand that's complementary to the template strand.
Which cellular process most directly ensures the formation, growth, and repair of specialized tissues in multicellular organisms?
A. making energy in cells
B. storing of wastes in cells
C. division and growth of cells
D. exchange of gases in cells
Answer:
The answers is divison and growth of cells
Explanation:
What it the difference between helper T cells and Killer T cells?
Answer:
Helper T-cells stimulate B-cells to make antibodies and help killer cells develop. Killer T-cells directly kill cells that have already been infected by a foreign invader.
Explanation:
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After several days near a window, a house plant began to grow toward the window. This growth pattern occurred because-
a. ) cells in the stem are activated when they are exposed to light
b. ) vascular tissue is distributed evenly throughout the
c. ) auxins prevent the growth of cells in the stem
d. ) hormones stimulate the growth of cells on the dark side of the plant
Answer:
D
Explanation:
You are adding new life to the ecosystem.
What is made of a single, long molecule of DNA?
Answer:
Chromosome is the answer
Penicillin is an antibiotic drug that interferes with peptidoglycan synthesis in bacteria, eventually resulting in cell death. What effect would you predict if you applied penicillin to archaea
Since penicillin interferes with peptidoglycan synthesis, it means that the drug will have no effects on archaea.
Archaea cell wallsThe cell wall of archaea consists mostly of polysaccharides and glycoconjugates. In order words, the cell walls of archaea lack peptidoglycan.
Since penicillin kills bacteria by interfering with the synthesis of peptidoglycan, it simply means that the drug will have no effect on archaea, since they do not have peptidoglycan in their cell walls.
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explanation:
Answer:
G. The star is cooler than a blue star
Explanation:
If the star the astronomer observed is similar in color and size to our sun, then it's impossible for it to be a white dwarf star because they are white and much smaller, while the star the astronomer observed had to have been some shade of yellow or orange and is similar in size to our sun.
A blue star is hotter than our sun by approximately 5000 kelvin. If the star observed is similar in color to our sun then we know that it hasn't reached a temperature hot enough to surpass a blue star, for colors of star change depending on temperature.
Our sun is not as bright as a red giant star. If the observed star was similar in color and size to the sun, then it couldn't have been as bright either.
There is no evidence that supports the star is farther away from other stars in the solar system.
Therefore, the option that makes the most sense is option G.
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The cladogram above diagrams the evolutionary history of chordates. Which structural adaptation led to greater motion and a more diverse diet?
A) lungs B) true bone C) vertebrate D) jaws and paired appendages
Answer:
D) Jaws and paired appendages
Explanation:
When an action potential arrives at an axon terminal, it causes the opening of _______ channels, which triggers fusion of neurotransmitter vesicles with the cell membrane.
Answer:
calcium
Explanation:
When an action potential arrives at an axon terminal, it causes the opening of calcium channels, which triggers fusion of neurotransmitter vesicles with the cell membrane.
During emerging adulthood, all body systems _____.
Answer:
function optimally.
Explanation:
During emerging adulthood, all body systems function optimally.
The major regions of the kidney are the outer region, called the __________, and the inner region, called the __________.
The major regions of the kidney are the outer region, called the renal cortex and the inner region, called the renal medulla
In order words, the two major regions of the kidney are the the cortex and medulla.
What is kidney?The kidneys are a pair of bean shaped organ in the body which has the following functions:
It helps to balance the body fluidsIt helps to remove unwanted toxic waste substances from the bodyIt controls the production of red blood cellsThe kidneys also helps to release hormones that regulate blood pressure.Learn more about the kidneys:
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Which of these makes a small blueprint
of DNA?
A. tRNA
B. ATP
C. mRNA
D. rRNA
Answer: mRNA
Explanation: it makes copies of dna before leaving the nucleus
The correct answer is option C.mRNA
Is mRNA a blueprint of DNA?
RNA (mRNA) carries the protein blueprint from a cell's DNA to its ribosomes, which are the "machines" that drive protein synthesis. Transfer RNA (tRNA) then carries the appropriate amino acids into the ribosome for inclusion in the new protein.
Is mRNA shorter than DNA?
Thus, the RNA molecules produced by transcription are released from the DNA template as single strands. In addition, because they are copied from only a limited region of the DNA, RNA molecules are much shorter than DNA molecules.
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Although the world is seeking to slow the pace of climate change, preserve wildufe, and support billions of people, deforestation continues. Between 1990 and 2016, the world lost 502,000 square miles of forest. In the well-known Amazon rainforest, about 17 percent of the trees have been destroyed over the past 50 years, with recent losses on the rise. What are some effects on the environment you'd expect to see from deforestation? Select ALL that apply.
A) enrichment of soil for better farmland
B) climate change resulting in global warming decreases in species diversity and richness
D) allows for more plant life to flourish with the removal of tree canopy
E) erosion due to heavy rains causes loss of habitat causing animal migration
Answer:
B) climate change resulting in global warming, C) decreases in species diversity and richness, and E) erosion due to heavy rains causes loss of habitat causing animal migration
Explanation:
Deforestation causes global warming which results in decrease of species diversity and richness and also results in soil erosion.
What is Deforestation?"Deforestation refers to the decrease in forest areas across the world that are lost for other uses such as agricultural croplands, urbanization, or mining activities."What is global warming?The rise of earth's normal temperature is called global warming. It is an effect of greenhouse gases and deforestation.What is soil erosion?Removal of top layer of soil is called soil erosion.Due to deforestation large no. of trees have been cut down and when heavy rainfall occurs there is no roots of tree to hold soil.Hence, the correct option is both B and E.
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What evidence is there to show that continental glaciers once covered South Africa?
____________ in rocks.
Answer:
Glacial striation is your answer
At the site of infection, leukocytes are stimulated to express ________, which causes them to attach to the endothelial cells before moving into the vessel wall.
Answer:
integrins
Explanation:
At the site of infection, leukocytes are stimulated to express integrins which causes them to attach to the endothelial cells before moving into the vessel wall.
The cell cycle is regulated by checkpoints during the _______ phases.
Answer:
the end of G1 phase, end of G2 phase, and partway through M phase (the spindle checkpoint) to regulate the cell cycle.
Explanation:
Based on the data in Table 1, complete the cladogram using the template provided to indicate the evolutionary relationships of the four species: African elephants (Loxodonta africana), Asian elephants (Elephas maximus), woolly mammoths (Mammuthus primigenius), and dugongs (Dugong dugon)
The cladogram will show that the African elephant and the Asian elephants are the most related species while the dugong is the least related species with the rest.
What is a cladogram?A cladogram is a pictorial illustration in the form of a branching tree which illustrates evolutionary relationship between species of oraganisms.
The four species under consideration are as follows:
African elephants (Loxodonta africana),Asian elephants (Elephas maximus),woolly mammoths (Mammuthus primigenius), anddugongs (Dugong dugon)A cladogram showing evolutionary relationship between the species will show that the African elephant and the Asian elephants are the most related species as they most recently evolved from a common ancestor.
The dugong is least related while the woolly mammoth share a common evolutionary relationship with them.
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Importance of carbon cycle
Answer:
The carbon cycle explains how carbon moves from one resource to another on the planet. This cycle is critical for the Earth's temperature and carbon balance to remain stable.
Explanation:
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Select the correct answer from each drop-down menu. the source of energy shown in the image is . a drawback of building a dam is that .
The drawback of building a dam is that the Reservoirs often emit a high percentage of greenhouse gases.
What do you mean by green house gases?Gases in the earth's atmosphere that trap heat are called greenhouse gases. The sun warms the earth's surface as it shines through the atmosphere during the day. The earth's surface cools down at night, releasing heat into the air.
Gases that can hold heat are known as greenhouse gases. They get their name from nurseries. A nursery is loaded with windows that let in daylight. That daylight makes warmth.
The process by which "greenhouse gases" trap heat close to the Earth's surface is known as the "greenhouse effect." These intensity catching gases can be considered a sweeping folded over Earth.
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A person who suffers from phenylketonuria (PKU) is unable to process phenylalanine because of a dysfunctional ______, a protein that is encoded by their DNA.
Answer:
enzyme
Explanation:
Enzymes are a type of protein.
Answer:
Enzyme
Explanation:
A person who suffers from phenylketonuria (PKU) is unable to process phenylalanine because of a dysfunctional enzyme, a protein that is encoded by their DNA.
Fossils that have characteristics common to both an ancestral species and descendent species are called.
what ocean acidification mean for the world ocean
Answer:
make hard shells and skeletons by combining calcium and carbonate from seawater
Explanation: