Question

In tomatoes, red fruit color is dominant to yellow. Round-shaped fruit is dominant to pearshaped fruit. Tall vine is dominant to dwarf vine.
a. Suppose you cross a true-breeding tall plant bearing red round fruit with a true-breeding dwarf plant bearing yellow pear-shaped fruit. Predict the appearance of the generation.
b. Assuming that the genes controlling the three traits are on three different pairs of chromosomes, what are the possible genotypes in the generation?
c. What are the expected phenotypic ratios?

Answer 1

Answer:

a) Al the offspring will have genotype - TtRrOo

b) Al the offspring will have genotype - TtRrOo

c) Tall, Red and Round

Explanation:

Given -

Red color of fruit is dominant to yellow color of fruit.

Round shape of fruit is dominant to pear shape of fruit

Also, Tall vine is dominant to dwarf vine

Crossing -  true-breeding tall plant bearing red round fruit (TTRROO) * true-breeding dwarf plant bearing yellow pear-shaped fruit (ttrroo)

a) Al the offspring will have genotype - TtRrOo

b) Al the offspring will have genotype - TtRrOo

c) Tall, Red and Round