GENETICS AND EVOLUTION
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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These organisms were capable of swimming from one continent to the other.
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Australia and Asia were once part of a larger continent.
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These organisms developed during the same time period.
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None of the above
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Detailed explanation-1: -Fossils of land-dwelling mammals found in both Australia and southern Asia were discovered to have body structures believed to have evolved from a common ancestor. What does this evidence most likely suggest? Australia and Asia were once part of a larger continent.
Detailed explanation-2: -Evidence for common ancestry can be found in the fossil record, from comparative anatomy and embryology, from the similarities of cellular processes and structures, and from comparisons of DNA sequences between species.
Detailed explanation-3: -Darwin could compare only the anatomy and embryos of living things. Today, scientists can compare their DNA. Similar DNA sequences are the strongest evidence for evolution from a common ancestor.
Detailed explanation-4: -Fossils are the preserved remains or traces of animals, plants, and other organisms from the past. Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today.
Detailed explanation-5: -Fossils, anatomy, embryos, and DNA sequences provide corroborative lines of evidence about common ancestry, with more closely related organisms having more characteristics in common. DNA underlies the similarities and differences in fossils, anatomy, and embryos.