Answer:
20
Explanation:
Amino Acids can be arranged in different ways. The books say there are only 20 amino acids.
<span>Most children acquire a firm sense of gender identity by the age of three</span>
DNA, deoxyribonucleic acid, is the genetic material in your cells. It was passed on to you from your parents and determines your characteristics. The discovery that DNA is the genetic material was another important milestone in molecular biology
Heredity, also called inheritance or biological inheritance, is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents
<span>Cell culture can be used to produce complex proteins.</span>
