Comparable segments of the mitochondrial DNA sequences of two similar species are shown below. This segment of DNA mutates at a

Question

s2008m [1.1K]

3 years ago

5

Comparable segments of the mitochondrial DNA sequences of two similar species are shown below. This segment of DNA mutates at a

rate of one base pair per 33 million years. Based on these DNA sequences, how long ago did the two species diverge from a common ancestor?
Species A mtDNA sequence: TACAAGATAC
Species B mtDNA sequence: TACGCGTAAC

a. 99 million years ago
b. 33 million years ago
c. 66 million years ago
d. 132 million years ago

Biology

2 answers:

mel-nik [20] · Answer 1 · 2022-07-10T23:35:01+03:00

mel-nik [20]3 years ago

7 0

132 million years ago

jeka57 [31] · Answer 2 · 2022-07-11T00:51:33+03:00

jeka57 [31]3 years ago

7 0

Pretty sure it's 66 million years (c) because there are 4 differences in total, then divide that in 2 to get 2, then multiply that by 2 to get 66 million. I'll tell you if it's right I'm taking the quiz right now. Yeah it was right