EVOLUTION
EVIDENCE FOR EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It shows that they have a common ancestor because of their similarities during early development.
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It shows how organisms change over time.
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It shows how some organisms have similar bone structure, but different functions.
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Detailed explanation-1: -Embryology is important to understanding a species’ evolution, since some homologous structures can be seen only in embryo development. For example, all vertebrate embryos, from humans to chickens to fish, have a tail during early development, even if that tail does not appear in the fully developed organism.
Detailed explanation-2: -Comparative Embryology Similarities in embryos are likely to be evidence of common ancestry. All vertebrate embryos, for example, have gill slits and tails. All of the embryos in Figure 9.3. 4, except for fish, lose their gill slits by adulthood, and some of them also lose their tail.
Detailed explanation-3: -Similar anatomy across different species highlights their common origin and can be seen in homologous and vestigial structures. Embryology provides evidence for evolution since the embryonic forms of divergent groups are extremely similar.
Detailed explanation-4: -The field of comparative embryology aims to understand how embryos develop, and to research the inter-relatedness of animals. It has bolstered evolutionary theory by demonstrating that all vertebrates develop similarly and have a putative common ancestor.
Detailed explanation-5: -Embryology provides further evidence to Darwin’s theory of evolution by showing that many organisms share highly similar characteristics during the earliest stages of life, that go on to assume different functions. Such observations suggest they may have derived from a common ancestor.