Chimpanzees have 48 chromosomes in somatic cells. Determine the chromosome set and the number of DNA molecules in the cells before the onset of meiosis, in the anaphase of meiosis I and in the prophase of meiosis II. Explain the answer in each case.
1) before starting meiosis, the set of chromosomes and DNA is 2n4c; At the end of the interphase, DNA doubled, the chromosomes became two-chromatid; 48 chromosomes and 96 DNA molecules;
2) in the anaphase of meiosis I, the number of chromosomes and DNA in the cell does not change and is equal to 2n4c;
3) haploid cells having a set of two-chromatid chromosomes with a set of n2c enter prophase of meiosis II; 24 chromosomes and 48 DNA molecules
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