Natural populations exhibit genetic variations. The organisms of the same species share gene pool but differ in their phenotypes due to the inheritance of different alleles. Frequency of an allele increases or decreases over generations and the process is called microevolution. Microevolution is responsible for small changes in allele frequencies which in turn impart the individuals of the same species quite distinct phenotypes.
<span>The first part of the question is: The male's ability to shake its tail is the mechanistic cause of this behaviour. For the second part of the question, the mate choice is the adaptive function of this behaviour.</span>
The answer that describes the sentence above in which is a segment of DNA that are being coded in means of making one type of protein molecule is known as the gene. The gene is considered to be a unit that is physical and function responsible for heredity.
