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3 April, 06:58

1. A plant that was homozygous recessive for seed shape was crossed with a plant that was

heterozygous for seed shape. What percentage of the F1 generation will be heterozygous?

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Answers (1)
  1. 3 April, 07:11
    0
    50% of the F1 generation will be heterozygous

    Explanation:

    Let seed shape be denoted by the letter H and h denoting the dominant and recessive traits respectively, the cross between the two parents will be:

    Parent 1 = homozygous recessive = hh

    Parent 2 = heterozygous = Hh

    F1 cross:

    H h

    h Hh hh

    h Hh hh

    from the cross above, out of 4 offspring in the F1 generation, 2 are heterozygous (Hh) while the remaining 2 are homozygous (hh), so,

    2/4 in percentage = 2/4 * 100 = 50%
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