人类染色体图示 its partner one duplicated chromosomEs Q 5678910111213141516171819202122 8910111213141516171819202122y Figure 7.2(a)Photograph of the 46 chromosomes from a diploid cell of a human male. All are in the duplicated state.(b) By cutting apart and arranging the chromosomes according to length and shape we see that there are two sets of 23 chromosomes, with all the chromosomes in one set having a partner or homologue, in the other. The partners dont pair at all during mitosis, but they pair up with each other during meiosis.人类染色体图示