OBJECTIVE LIFE SCIENCE
DIVERSITY AMONG LIFE FORMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Homologous Structures
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DNA Similarities
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Chromosomal comparisons
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None of the above
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Detailed explanation-1: -Another type of evidence for evolution is the presence of structures in organisms that share the same basic form. For example, the bones in the appendages of a human, dog, bird, and whale all share the same overall construction (Figure 21.5.
Detailed explanation-2: -An example of homologous structures are the limbs of humans, cats, whales, and bats. Regardless of whether it is an arm, leg, flipper or wing, these structures are built upon the same bone structure. Homologies are the result of divergent evolution.
Detailed explanation-3: -Fossil Record They provide evidence of life evolving through natural selection. Fossilized bones, teeth, shells or even entire organisms can paint a picture of life from long ago, giving us clues about organisms that are long extinct.