Question

The genotype of a green stemmed tomato plant is denoted by “GG” and that of a purple stemmed tomato plant as “gg”. When these two plants are crossed
a) What colour of stem would you expect in their F1 progeny

b) Give the percentage of purple stemmed plant if F1 plants are self-pollinated.
In what ratio would you find the green and purple colour in the F2 progeny

Answer 1

Answer:

f1 progeny is of green colour

in f2 progeny:

genotypic ratio=1:2:1

phenotypic ratio=3:1

Answer 2

In the F1 generation we get Gg.

The percentage of purple stemmed plant is 99%.

1:1