HEREDITY
MONOHYBRID CROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Wrinkled seed (r) are recessive to smooth seeds. Show a wrinkled seed plant crossed with a heterozygous smooth seed plant. What is the chance that the offspring will be smooth and what will its genotype be?
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50% RR
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75% Rr
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75% RR
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50% Rr
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Explanation:
Detailed explanation-1: -In the F1 generation, 50% of the offspring produced wrinkled seeds.
Detailed explanation-2: -When a heterozygous round seeded plant is crossed with a recessive wrinkle seeded plant, the round and wrinkled phenotypes will appear in F, in the ratio.
Detailed explanation-3: -So, the correct option is ‘303 rounded: 301 wrinkled’.
Detailed explanation-4: -A cross between homozygous round seeds plant (RR) and homozygous wrinkled seeds plant (rr) will produce heterozygous (Rr) round seeds plants as F1 generation.
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