A deep cold (oligotrophic) lake would have the following characteristics: a) low oxygen levels, low concentration of other nutrients

b) high oxygen levels, low concentration of other nutrients

c) low oxygen levels, high concentration of other nutrients

d) high oxygen levels, high concentration of other nutrients

What role does differential reproduction play in natural selection? ! a) some organisms have different reproductive success due to nongenetic traits. b) some organisms have traits that them reach reproductive age. c) different methods of reproduction result in some organisms being genetically altered. d) reproduction varies among organisms due to pathogenic factors. the answer is not a or d based on other posts.

What is a gene ? a) a section of a protein that codes for dna. b) the alternate version of a trait. c) the visible trait in the f1 generation. d) a section of dna that codes for a specific trait .

If a human has 23 pairs of chromosomes in every muscle cell of its body how many chromosomes will be in a human egg or sperm