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Kay [80]
2 years ago
15

A group of scientists determines that a mitochondrial DNA sequence shared by two species has a constant mutation rate. The seque

nces of mitochondrial DNA for the two species are shown below. Species A: GACTGGGCATTA Species B: GACCGGACATTA Based on this information, which of the following best explains the difference in the DNA sequence between the two species? Species A and B probably share the most recent ancestor because they only differ by three mutations. Species A and B have fewer differences between DNA sequences means that fewer mutations occurred. Species A and B probably have distinct ancestors because they have many differences in mutations. Species A and B are closely related because they differ by five mutations in their DNA sequence.
Biology
1 answer:
grandymaker [24]2 years ago
7 0

Species A and B have fewer differences between DNA sequences means that fewer mutations occurred. It is likely due to sequence homo-logy.

<h3>Whta are mutations?</h3>

A mutation is any alteration in the nucleotide (DNA) sequence of the genome of a particular organism.

The linear order of nucleotides and their differences (mutations) can be used to infer homo-logy between two species.

In this case, there are only two different nucleotides in these sequences, thereby sequence homo-logy indicates a likely common origin.

Learn more about sequence hom-ology here:

brainly.com/question/9640986

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