Agroup of scientists determines that a mitochondrial dna sequence shared by two species has a constant mutation rate. the sequences of mitochondrial dna for the two species are shown below. species a: gactgggcattaspecies b: gaccggacatgausing the principles of molecular clocks and a known mutation rate for this sequence, the scientists determine that these species diverged from a common ancestor 30 million years ago. based on this information, how much longer do you predict it would take these species to differ by a total of seven base pairs? a. 60 million yearsb. 20 million yearsc. 140 million yearsd. 40 million years

D. 40 million years

Explanation:

from the sequence, there is a difference in three base pairs and this took 30 million years. it can thus be concluded that it took 10 million years for a difference in a base.

thus, to make it up to 7 base pairs will require another mutation of 4 base pairs. this will take 40 million years.

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consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.