1. If the amount of DNA in a somatic cell equals C during G1 of interphase, how much DNA is present in the cell during each phase of mitosis and meiosis?

In mitosis, the DNA replication occurs in S phase, so the amount of DNA increases in S phase and remain double until cell division (karyiokinesis). Meiosis 1 is reductional division and meiosis 2 in equational division. after meiosis the number of chromosome and DNA become half.

Explanation:

Mitosis: interphase (G1, S, and G2) and mitotic phase (prophase, metaphse, anaphase, telophase)

c = chromose number, N = DNA amount

In mitosis, the chromosome number remains same until anaphase, so the number of chromosome become doubles in anaphase and telophase.

In mitosis, the DNA replication occurs in S phase, so the amount of DNA increases in S phase and remain double until cell division (karyiokinesis).

meiosis; Meiosis 1 and Meiosis 2,

Meiosis 1 is reductional division and meiosis 2 in equational division.

after meiosis the number of chromosome and DNA become half.