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8 July, 22:38

In sheep, white wool is dominant over spotted wool. If 10 purebred white wool sheep (TT) are crossed with 10 spotted wool sheep (tt), how many offspring will have spotted wool?

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  1. 8 July, 23:02
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    According to Mendel Law of segregation all offspring in F1 generation will white wool. However, in F2 generation three will be white wool and only one offspring will be spotted wool.

    Phenotype (parental generation) White wool x spotted wool

    Genotype TT tt

    F1 generation Tt, Tt, Tt, Tt (white wool)

    Self cross Tt x Tt

    F2 generation TT, Tt, Tt, tt

    white wool = 3

    spotted wool = 1
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