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Home » Queries & Discussions » In a heterozygous individual for a given gene ,if a crossing over has occurred between the gene locus and the centromere of the chromosome , the segregation of the two alleles of the given gene will occur during meiosis at

In a heterozygous individual for a given gene ,if a crossing over has occurred between the gene locus and the centromere of the chromosome , the segregation of the two alleles of the given gene will occur during meiosis at

By Frija T C B

In a heterozygous individual for a given gene ,if a crossing over has occurred between the gene locus and the centromere of the chromosome , the segregation of the two alleles of the given gene will occur during meiosis at……

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One comment

  1. Ace The Race Geek

    The homologous chromosomes are segregated during Anaphase I without an exchange of genetic material between the gene and the centromere. If crossing over does occur between the gene and the centromere the second division (MII/meiosis 2) segregation of the two alleles will occur in anaphase ll.
    When non-sister chromatids do cross over between the centromere and the locus, the A and a alleles are still together in the nuclei at the end of the first division of meiosis i.e. no first-division segregation occurs
    However, the second meiotic division does move the A and a alleles into separate nuclei, giving rise to the second-division segregation.

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