AP BIOLOGY

EVOLUTION

EVIDENCE FOR EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Scientists tested a bat, a dog, a snake, and a human to see how their amino acids differed in a specific protein. This is a form of ____
A
Evidence from biochemistry
B
Analogous structure
C
Fossil record evidence
D
Evidence from vestigial structures
Explanation: 

Detailed explanation-1: -Homologous structures are similar physical features in organisms that share a common ancestor, but the features serve completely different functions. An example of homologous structures are the limbs of humans, cats, whales, and bats.

Detailed explanation-2: -That two species and their common ancestor have similar DNA is strong evidence supporting evolution. Protein amino acid sequences can also be used to compare similarities between species. Proteins are made from amino acids and the sequence of these amino acids is controlled by genes.

Detailed explanation-3: -This is known as homologous structure. human arms, cat forelegs, whale flippers, and bat wings all have the same basic bone structure.

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