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They both change the allele frequency, and both select against less well adapted phenotypes. Extremes are eliminated in stabilising selection, whereas intermediates are eliminated in disruptive selection....

In a point mutation, a single base is substituted, inserted, or deleted. This changes the sequence of amino acids in ATP synthase. This changes the tertiary structure of ATP synthase. ATP synthase is used...

A phenotype is the expression of the genetic constitution of an organism and how it interacts with the environment.

The correct answer is: Thymine.The four bases found in DNA molecules are Cytosine, Guanine, Adenine and Thymine but in RNA molecules, the Thymine base is replaced by Uracil.

Most axons in the human nervous system are myelinated, meaning they are enclosed in a myelin sheath, a fatty deposit created and maintained by Schwann cells that acts as an electr...