In tomato, the genes for purple vs. green stems (P=purple,dominant; pp=green) an

Question

In tomato, the genes for purple vs. green stems (P=purple,dominant; pp=green) and cut vs potato leaves (C=cut,dominant; cc=potato) are inherited independently. Deduce the genotypes of the parents in the following cross, "purple,cut" X "purple, potato", which resulted in the F1 progeny showing 48 "purple,cut," and 49 "purple, potato." A. The first parent (on the left) genotype must be PP Cc. B. It is possible that the second parent (on the right) is Pp cc. C. None of the above In tomato, the genes for purple vs. green stems (P=purple,dominant; pp=green) and cut vs potato leaves (C=cut,dominant; cc=potato) are inherited independently. Deduce the genotypes of the parents in the following cross, "purple,cut" X "purple, potato", which resulted in the F1 progeny showing 48 "purple,cut," and 49 "purple, potato." A. The first parent (on the left) genotype must be PP Cc. B. It is possible that the second parent (on the right) is Pp cc. C. None of the above A. The first parent (on the left) genotype must be PP Cc. B. It is possible that the second parent (on the right) is Pp cc. C. None of the above

Explanation / Answer

The parental genotypes are purple, cut and purple potato.

F1 offsprings have almost equal proportions of purple, cut and purple, potato.

Consider the following cross,

PPCc x PPcc

Equal proportions of purple,cut and purple, potato are produced.

Therefore, the correct answer for this question is option (A) The first parent (on the left) genotype must be PPCc

PC Pc PC Pc Pc PPCc PPcc PPCc PPcc Pc PPCc PPcc PPCc PPcc Pc PPCc PPcc PPCc PPcc Pc PPCc PPcc PPCc PPcc

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