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प्रश्न
What are homologous structures? Give an example. Is it necessary that homologous structures always have a common ancestor?
उत्तर
Homologous structures are those structures which have a common basic structure but perform different functions. For example, forelimbs of reptiles, amphibians and mammals. Yes, homologous structures always have a common ancestor from which they have evolved along different directions due to adaptations to different needs.
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संबंधित प्रश्न
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(1) Organism
(2) Population
(3) Species
(4) Genes
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Answer the following question.
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Speciation
