Adiploid somatic ("body") cell has 2n = 20 chromosomes. at the end of mitosis, each daughter cell would have chromosomes. at the end of meiosis i, each daughter cell would have chromosomes. at the end of meiosis ii, each daughter cell would have chromosomes.
a. 2n = 20, 2n = 20, 1n = 10
b. 2n = 20, 2n = 10, 1n = 10
c. 1n = 10, 1n = 10, 1n = 10
d. 2n = 20, 2n = 20, 1n = 20
e. 2n = 20, 1n = 10, 1n = 10

e. 2n = 20, 1n = 10, 1n = 10

Explanation:

When a cell undergoes mitosis it divides into two daughter cells, each identical to the original. For that reason, a diploid cell with 20 chromosmoes (2n = 20) will produce two identical daughter cells after mitosis.

During meiosis I the homologous chromosomes separate and the daughter cells become haploid (only one set of each chromosome) and with half the original chromosome number (n=10). Each chromosome has 2 chromatids.

During meiosis II the two chromatids of each chromosome separate, but the daughter cells remain haploid and with the same chromosome number.

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.