Respuesta :
A DNA matching segment exists in a physical region of a chromosome that is identical between two individuals.
What is DNA segments?
A DNA matching segment exists in a physical region of a chromosome that is identical between two individuals. This would demonstrate that they have both inherited this portion of their genomes from a common ancestor.
Deoxyribonucleic acid (DNA) exists as an organic chemical that includes genetic information and instructions for protein synthesis. It exists found in most cells of every organism. DNA exists a key part of reproduction in which genetic heredity appears via the passing down of DNA from parent or parents to offspring.
The molecular clock exists as a technique utilized to specify the time when the two species diverged from a common ancestor. It utilizes the mutation rate to confine the same.
Mutation rate stands for the rate at which several mutations assume a place in a given unit of time. For example, the mutation rate in a provided question stands at one mutation per 10 million years, that exists, one nucleotide is mutated in 10 million years.
If we compare the DNA sequence of the provided two species, we would find that three mutations include taken place.
Species A: CTTAAGCTAGTAAGGACC
Species B: CATAAGTTAGTAAGGTCC
Thus, 30 million years would have departed to evolve three mutations.
Hence, they must include shared a common ancestor around 30 million years ago.
To learn more about DNA segments refer to:
https://brainly.com/question/1882724
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The complete question is,
A certain segment of DNA can be used as a molecular clock. Its rate of mutation is one mutation per 10 million years. Examine the DNA segments from two different species: Species A: CTTAAGCTAGTAAGGACC Species B: CATAAGTTAGTAAGGTCC Using this example, explain how this information can be used to determine how long ago these two species shared a common ancestor.
