Why are homologous organs considered evidence of an evolutionary relationship?
Answer and explanation
Correct answer: Because their basic structure is similar even if functions are different
The governing concept is divergent evolution. Homologous organs have the same basic structural plan because they were inherited from a common ancestral pattern, although their functions may have become different in different organisms. For example, the forelimbs of humans, bats and whales contain corresponding bones but serve different purposes. Similar function is not required, and these organs are not restricted to insects or without genetic material. Therefore option A is correct.
Frequently asked questions
What is the correct answer to this question?
Because their basic structure is similar even if functions are different
Why is this the correct answer?
The governing concept is divergent evolution. Homologous organs have the same basic structural plan because they were inherited from a common ancestral pattern, although their functions may have become different in different organisms. For example, the forelimbs of humans, bats and whales contain corresponding bones but serve different purposes. Similar function is not required, and these organs are not restricted to insects or without genetic material. Therefore option A is correct.
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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