HEREDITY
MONOHYBRID CROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In plants, tall (T) is dominant to short (t). Perform the following cross:Tt x Tt. What is the probability of producing a short plant?
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0%
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25%
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50%
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75%
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Explanation:
Detailed explanation-1: -100 % Hint: Heterozygous is a condition when there are two different traits of a particular gene.
Detailed explanation-2: -When a pure tall plant (TT) is crossed with the pure short plant (tt), then the progeny in the F1 generation will be hybrid (Tt). When the F1 generation is self-crossed (Tt), then in the F2 generation, the progeny produced will be tall homozygous (TT), Tall heterozygous (Tt), and dwarf homozygous in the ratio of 1:2:1.
Detailed explanation-3: -This is because the heterozygous plant will make two types of gametes, one type having T allele and the other having t allele. Hence, the correct answer is ‘1 tall : 1 dwarf’
Detailed explanation-4: -So, the correct option is ‘50%’.
There is 1 question to complete.