Question

4. For tomato plants, the allele for red fruit color (R) is dominant to the allele for yellow

Answer 1

The  probability that of the F1 offspring will have red pear shaped fruit 0%.

c. 0%

Explanation:

Given-

Red color (R) is dominant over yellow (r) fruit color

Round shaped (F) is dominant over pear shaped (f) fruit

Yellow pear shaped = rrff

Heterozygous for red fruit and homozygous for round shape = RrFF

Gametes of rrff = rf , rf, rf, rf

Gametes of RrFF = RF, RF, rF, rF

Performing a cross between these gametes would give -

The cross performed is attached as a word file for your reference.

According to the cross,

The probability of red pear shaped fruit is 0%