Question

Discuss the three sources from which genetic variability arises during meiosis and fertilization.​

Answer 1

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Crossing over adds even more variation to this. The three sources of genetic variability in a sexually reproducing organism are: Independent assortment of homologous chromosomes during meiosis I and of nonidentical sister chromatids during meiosis II. Crossing over between homologous chromosomes during prophase I.

Answer 2

Crossing over adds even more variation to this.

The three sources of genetic variability in a sexually reproducing organism are: Independent assortment of homologous chromosomes during meiosis I and of nonidentical sister chromatids during meiosis II. Crossing over between homologous chromosomes during prophase I.