Tomato fruits are red and yellow, smooth and fluffy. The red gene is dominant, the fluff gene is recessive.

Tomato fruits are red and yellow, smooth and fluffy. The red gene is dominant, the fluff gene is recessive. Both pairs are on different chromosomes. What offspring can be expected from crossing heterozygous tomatoes with red and smooth fruits with an individual homozygous for both recessive traits?

The red gene is dominant (A), the yellow gene is recessive (a). The gene for smooth fruits is dominant (B), the gene for fluffy fruits is recessive (b).

The genotype of the first (heterozygous) individual is AaBb, the genotype of the second (homozygous) individual is aabb.

R: AaBb x aabb

G: AB, Ab, aB, ab x ab

F: AaBb – 25% red and smooth;

Aabb – 25% red and fluffy;

aaBb – 25% yellow and smooth;

aabb – 25% yellow and fluffy.