SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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These are the same animal.
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These animals have a common ancestor.
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These animals are not likely related.
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These animals are likely becoming one species.
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Detailed explanation-1: -You look at two species and see very similar DNA. What does this likely tell you? These are the same animal.
Detailed explanation-2: -If two species have the “same” gene, it is because they inherited it from a common ancestor. In general, the more DNA differences in homologous genes between two species, the more distantly the species are related.
Detailed explanation-3: -Homologous features If two or more species share a unique physical feature, such as a complex bone structure or a body plan, they may all have inherited this feature from a common ancestor. Physical features shared due to evolutionary history (a common ancestor) are said to be homologous.
Detailed explanation-4: -That’s because closely related species most likely diverged from one another fairly recently in the evolutionary span. Thus, they haven’t had as much time to accumulate random mutations in their genetic codes.
Detailed explanation-5: -Species that are very closely related have very similar DNA with only minor differences. They are related through a common ancestor.