Problem:
I have two questions that I really need hlep with
Question 1: Why is meiosis important for the maintenance of the normal quantity of chromosomes of a species with sexual reproduction?
Question 2: Why is histidine an essential amino acid for children but not for adults ? What changes in the body occur which lead to the formation of histidine in adults but not in children ? What causes these changes ?
Read each question carefully and answer completely.