Acertain segment of dna can be used as a molecular clock. its rate of mutation is one mutation per 15 million years. examine the dna segments from two different species: species a: gttgagctagtatggacc species b: gataagctagtaaggtca using this example, explain how this information can be used to determine how long ago these two species shared a common ancestor. be sure to answer this question in paragraph form using complete sentences.

Species A: GTTGAGCTAGTATGGACC

Species B: GATAAGCTAGTAAGGTCA

These species differ in 5 nucleotides.

This number should be multiplied by the rate of mutations; that is;

5 × 15 million years =75 million years.

well we can't tell you because we cant see the time give a screen shot or something.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.