In tomatoes, tall (D) is dominant over dwarf (d) and smooth fruit (P) is dominant over pubescent fruit (p), which is covered with fine hairs. A farmer has two tall and smooth tomato plants, which we will call plant A and plant B. The farmer crosses plants A and B with the same dwarf and pubescent plant and obtains the following numbers of progeny: Progeny of: Plant A Plant BDd Pp 122 2 Dd pp 6 82 dd Pp 4 82 dd pp 124 4 a. What are the genotypes of plant A and B

The correct answer would be - Dd Pp.

Explanation:

As it is given that tall D is dominant over dwarf d and smooth plant Pis dominant over pubescent p so the the genotype of dominant trait that is tall and smooth tomato plants would be DDPP . similarly the recessive trait that is dwarf and pubescent plant would be ddpp

Thus, the cross between these would be -

DD PP x ddpp

And gametes would be - DP,DP, dp, and dp.

So, all the 16 offspring would have Phenotype would be heterozygous tall and smooth and DdPp genotype .

Thus, the correct answer would be - Dd Pp.

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