The pair comes close to each other during meiosis so that they could exchange genes between sister and non-sister chromatids.Īlthough both members of the homologous pair have similar genes and loci, they may differ in the alleles. Each maternal chromosome has a corresponding paternal chromosome of the same gene sequence, gene loci, chromosomal length, and centromere location. When the sperm cell successfully fertilizes the egg cell the resulting zygote is a diploid, which means the union of the two haploid cells results in a single cell with two sets of chromosomes: one set that is maternally derived and another set that is paternally derived. Prior to fertilization, both gametes are haploid. ![]() One set would come from the male gamete (sperm cell) and the other set, from the female gamete (egg cell). The chromosomes in the nucleus are of two sets. The chromosomes of a eukaryotic cell are located in the nucleus.
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