The molecular clock is a scientific technique which presents a means of estimating evolutionary rates and timescales using genetic data. It uses mutation rate of biomolecules when two or more life forms diverged to estimate the time. Answer is B.
A population that has been isolated, especially a smaller one, could have a high level of homozygosity and therefore not a lot of genetic variation. Gene flow between such populations can increase the level of heterozygosity, and therefore up genetic variation.
<span>repressors as well as by transcriptional activators.</span>
Answer: c
Explanation: because it helps by excreting
When pieces of the granite get broken off and carried to a new place by weathering and erosion, the pieces can get deposited in the bottom of a lake or sea. Over time the sediments get compacted and cemented together to become sedimentary rock. Sandstone, limestone, and conglomerate can form this way.
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