Why do homologous organs indicate common ancestry in evolution?
Answer and explanation
Correct answer: Because their basic structure is similar even if functions differ
Homologous organs have the same basic structural plan and developmental origin, although their functions may differ, such as a human arm, a whale flipper, and a bat wing. The shared underlying arrangement is best explained by inheritance from a common ancestor, followed by adaptation to different environments or uses. Option A is correct; colour, flying, and complete absence of change are not defining features of homology.
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What is the correct answer to this question?
Because their basic structure is similar even if functions differ
Why is this the correct answer?
Homologous organs have the same basic structural plan and developmental origin, although their functions may differ, such as a human arm, a whale flipper, and a bat wing. The shared underlying arrangement is best explained by inheritance from a common ancestor, followed by adaptation to different environments or uses. Option A is correct; colour, flying, and complete absence of change are not defining features of homology.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Heredity and Evolution.
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