EVOLUTION
EVOLUTION OF A POPULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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similar functions point to a common ancestor
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analogous structures indicate a common ancestor
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vestigial structures point to a common ancestor
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homologous structures indicated a common ancestor
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Detailed explanation-1: -analogy: The wings of pterosaurs (1), bats (2), and birds (3) are analogous as wings, but homologous as forelimbs. This is because they are similar characteristically and even functionally, but evolved from different ancestral roots.
Detailed explanation-2: -Molecular similarities provide evidence for the shared ancestry of life. DNA sequence comparisons can show how different species are related. Biogeography, the study of the geographical distribution of organisms, provides information about how and when species may have evolved.
Detailed explanation-3: -Bird and Bat wings are analogous because they evolved independently. But the wing bones are homologous because they were inherited from the common ancestor.
Detailed explanation-4: -Traits that are shared due to common ancestry are homologous structures. The similar bone arrangement of the human, bird, and whale forelimb is a structural homology. Structural homologies indicate a shared common ancestor. Homologous limb structure of human, bird, and whale.