HEREDITY
MONOHYBRID CROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Green is dominant to yellow. Two heterozygous green plants are crossed. What are the genotypes of the offspring?
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100% Gg
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50% GG, 50% Gg
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25% GG, 50% Gg, 25% gg
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75% Gg, 25% gg
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Explanation:
Detailed explanation-1: -Hence the genotype of the heterozygous yellow seeded plant will be “Yy” and that for green seeded plant will be “yy” (as the recessive allele is expressed only in homozygous conditions).
Detailed explanation-2: -The cross between heterozygous yellow seeded plant and green seeded plant will produce 50% yellow seeded plants and 50% green seeded plants. Hence, option A is the correct answer.
Detailed explanation-3: -The genotypic ratio is 1: 2: 1 (YY-1, Yy-2 and yy-1).
Detailed explanation-4: -Since the plant with the green pods is heterozygous for the trait, its genotype must be Gg.
There is 1 question to complete.