Two pea plants were subjected to cross-pollination. Of the 183 plants produced in the next generation, 94 plants were found to be tall and 89 plants were found to be dwarf. The genotypes of the two parental plants are likely to be ________.
Two pea plants were subjected to cross-pollination. Of the 183 plants produced in the next generation, 94 plants were found to be tall and 89 plants were found to be dwarf. The genotypes of the two parental plants are likely to be ________.
The correct option is C Tt and tt
Assuming that dwarf characteristic is recessive as about half of the offspring were the dwarf. This implies that half of the offsprings produced have to be homozygous for the dwarf genotype (tt) is the only way to get the Tt and tt (Test cross). Thus, produces half with genotype Tt (tall) and another half with genotype tt (dwarf) offsprings. On crossing a homozygous dominant (TT) with any other genotype, all the offsprings will be tall, because all will carry at least one dominant allele (T). If you cross Tt and Tt, then you get F1 generation as TT (Tall), Tt (Tall) and tt (dwarf).
Thus, the correct answer is option C.
Assuming that dwarf characteristic is recessive as about half of the offspring were the dwarf. This implies that half of the offsprings produced have to be homozygous for the dwarf genotype (tt) is the only way to get the Tt and tt (Test cross). Thus, produces half with genotype Tt (tall) and another half with genotype tt (dwarf) offsprings. On crossing a homozygous dominant (TT) with any other genotype, all the offsprings will be tall, because all will carry at least one dominant allele (T). If you cross Tt and Tt, then you get F1 generation as TT (Tall), Tt (Tall) and tt (dwarf).
Thus, the correct answer is option C.
