Ascientist is trying to determine the relationship between clams, snails, and squid. when she generates a molecular clock, she is surprised to see that clams and squid are more closely related than clams and snails. which did the molecular clock data show? clams and squid have been evolving separately for a longer time than clams and snails. clams and squid have been evolving separately for a shorter time than clams and snails. clams and snails have more in common genetically than clams and squid. clams and snails are more similar in related structures than clams and squids.

Clams and squid have been evolving separately for a shorter time than clams and snails.

Explanation:

The molecular clock is the technique that, through the number of differences between two DNA molecules, allows to know the past time of the divergence between two species. By Molecular Clock theory, sequence substitutions of certain proteins occur at a constant rate, proteins would be the timers, because the number of nucleotide differences between two species would be proportional to the time of evolutionary divergence between them.

The molecular clock was used in the above question to discover the evolutionary relationships clams, squid and snails. In this experiment, it was found that clams and squids are more closely related than clams and snails. This means that clams and squids evolved separately for a shorter time than clams and snails.

1. b.

2. d.

3. a.

5. d.

6. c.

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