Among pea plants, we see more peas with smooth pods than with constricted pods. if a plant with constricted pods is mated with a plant with smooth pods, the offspring have smooth pods. when the offspring mature, and two of them are mated, they have a 25 percent chance of producing offspring with constricted pods. identify the offspring with homozygous alleles for the smooth pod trait.

Question

Rohan Sharp

Biology

20 July, 13:35

Among pea plants, we see more peas with smooth pods than with constricted pods. if a plant with constricted pods is mated with a plant with smooth pods, the offspring have smooth pods. when the offspring mature, and two of them are mated, they have a 25 percent chance of producing offspring with constricted pods. identify the offspring with homozygous alleles for the smooth pod trait.

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Lucia Carney · Answer 1

OK if we said the the allel for smooth is (S) and it is dominant and the allel for constricted is (s) and it is recessive, so we started by mating two pure pea plant one smooth and one constricted the offspring would have a genotype of (Ss) and it'S phenotype is smooth, and if that offspring did self pollination it will produce 4 offsprings with genotype as follow: 1 (SS) : 2 (Ss) : 1 (ss) so there would be 3 smooth and one constricted which will be the last one (ss)