True or false evolution occurs when there is a change in the gene pool of a population

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is

Which is one example of a phenotypic change that is not genetic

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?