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Multiple Choice
Which gametes can a plant with the genotype rryy produce?
A
ry
B
rY
C
RY
D
Ry
Verified step by step guidance
1
Understand the genotype of the plant: The plant has a genotype of 'rryy', which means it is homozygous recessive for both traits. The 'r' and 'y' alleles are recessive.
Identify the possible alleles for each gene: Since the plant is homozygous recessive, it can only contribute 'r' alleles for the first gene and 'y' alleles for the second gene.
Determine the possible combinations of alleles in the gametes: Each gamete will receive one allele from each gene. Since the plant is 'rryy', the only possible combination of alleles in the gametes is 'ry'.
Consider the law of segregation: According to Mendel's law of segregation, alleles separate during gamete formation, and each gamete receives one allele from each pair. In this case, the gametes will receive 'r' from the 'rr' pair and 'y' from the 'yy' pair.
Conclude the possible gametes: Given the genotype 'rryy', the only gamete that can be produced is 'ry'. Other combinations like 'rY', 'RY', or 'Ry' are not possible because the plant does not have 'R' or 'Y' alleles.