Species specific category

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

In "the man in the water," what was the remarkable occurrence that rosenblatt reported?

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?