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23 August, 04:39

Red color in flowers shows incomplete dominance over white. A pink flower (Rr) is crossed with a white flower (rr). What percentage of the offspring will be red? A.) 25% B.) 50% C.) 75% D.) 0%

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  1. 23 August, 04:43
    0
    When Rr is crossed with rr, following offsprings are produced,

    Rr x rr

    Rr (pink)

    Rr (pink)

    rr (red)

    rr (red)

    So out of 4 off springs, 2 are rr and thus the probability becomes

    2/4 = 50%
  2. 23 August, 05:00
    0
    Option D

    Explanation:

    In incomplete dominance the characteristics of two different alleles will mix up and produce a new allele.

    it is given that genotype of pink flower is Rr and genotype of white flower is rr.

    Therefore genotype for red flower would be "RR"

    A cross is carried out between Rr and rr.

    Following offspring are produced -

    Rr * rr

    Rr, Rr, rr, rr

    Out of four, offspring with genotype Rr are pink in color, whilr genotype rr are white in color.

    Thus, none of the offspring is red in color.

    Hence, option D is correct
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