In Comparing the Number of Differences in Amino Acids for Cytochrome

question 5

Multiple Choice

In comparing the number of differences in amino acids for cytochrome c: between a moth and a rattlesnake there are 31 different amino acids in the sequence,between a moth and a dog there are only 25,and there are 6 differences between a dog and a horse.Therefore,

• A) this is sufficient evidence to prove the moth is closer related to the dog than to the horse.
• B) dogs had to evolve earlier than horses, since moths are more primitive.
• C) evolution used to be considered a unifying theory until biochemical data showed only differences.
• D) added to anatomical similarities and fossil records, this provides additional evidence for constructing a phylogeny or family tree.
• E) biochemical information is not relevant to the evolution of organisms.

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