BotanyIn a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RRTt genotype is crossed with a plant that is rrtt, then

In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RRTt genotype is crossed with a plant that is rrtt, then

  1. A

    75 per cent will be tall with red fruit

  2. B

    All the offspring will be tall with red fruit

  3. C

    25 per cent will be tall with red fruit

  4. D

    50 per cent will be tall with red fruit

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    Solution:

    RRTt x rrtt
    Gametes for RRTt is RT and Rt
    Gametes for rrtt is rt

    Therefore, the progenies formed will be having genotypes RrTt (Tall and having red fruit) and Rrtt (Short and having red fruit). Hence, we can say that 50% progenies will be tall and having red fruits.

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