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Question
What is the possible phenotype of the F1 offspring produced from the cross in which one of the parents is pure line for round seeds and the other parent is pure line for wrinkled seeds in pea plant?
What is the possible phenotype of the F1 offspring produced from the cross in which one of the parents is pure line for round seeds and the other parent is pure line for wrinkled seeds in pea plant?
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Solution
The correct option is A Only round seeds
A pure line is the progeny of a single self fertilised homozygous plant.
The trait of producing round seeds is dominant over wrinkled seeds.
Hence the allele for round seeds is R and wrinkled seeds is r.
The genotype of the plant producing round seeds is RR (as it is a pureline).
The genotype of plant producing wrinkled seeds is rr.
When these plants are crossed,
the resulting offspring produce only round seeds.
A pure line is the progeny of a single self fertilised homozygous plant.
The trait of producing round seeds is dominant over wrinkled seeds.
Hence the allele for round seeds is R and wrinkled seeds is r.
The genotype of the plant producing round seeds is RR (as it is a pureline).
The genotype of plant producing wrinkled seeds is rr.
When these plants are crossed,
the resulting offspring produce only round seeds.
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