Biology, 19.04.2020 20:40 sophie5064
A scientist is comparing the sequences of related genes among three species. Two of the species have very similar sequences, while the sequence of the third species differs greatly from the others. The scientist uses this comparison to propose an evolutionary history of the species. Which statement best explains the usefulness of the evidence that the scientist gathered?
A. Mutations can act as a molecular clock that show when species had a common ancestor.
B. Changes in gene sequences generally occur when two species interbreed.
C. Changes in gene sequences generally occur when one species evolves into another species.
D. Although some mutations have little effect, many mutations act to distinguish one species from another.
Answers: 2
Biology, 22.06.2019 08:30
What are some natural processes that represent physical and chemical changes?
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Biology, 22.06.2019 17:50
Babies with very low or very high birth weight are less likely to survive. observe a graph of the data. % babies born at different weights % babies born in that category 6.0 6.5 in 50-555 70-75 80-8511 100-1055 which statement is a valid claim that could be made using the data in the graph? directional selection is occurring because the graph favors an extreme. mark this and retum save and exit next submit o type here to search
Answers: 2
A scientist is comparing the sequences of related genes among three species. Two of the species have...
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