If two organisms have high genetic similarity, what can it mean in evolutionary terms?
Answer and explanation
Correct answer: They may be relatively closely related
Genetic information can be compared to estimate evolutionary relationships. If two organisms share many similar DNA sequences or inherited features, they may have received them from a more recent common ancestor and therefore may be relatively closely related. Similarity is evidence that must be interpreted with other biological information; it does not mean the organisms are the same individual. All organisms used in such comparisons may have common ancestry, so options B, C and D are incorrect.
Frequently asked questions
What is the correct answer to this question?
They may be relatively closely related
Why is this the correct answer?
Genetic information can be compared to estimate evolutionary relationships. If two organisms share many similar DNA sequences or inherited features, they may have received them from a more recent common ancestor and therefore may be relatively closely related. Similarity is evidence that must be interpreted with other biological information; it does not mean the organisms are the same individual. All organisms used in such comparisons may have common ancestry, so options B, C and D are incorrect.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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