CBSE 2022 · Region 1 · Set 2 · Q11

A cross was made between green-stemmed tomato plants denoted by (GG) and purple-stemmed tomato plants denoted as (gg) to obtain $\displaystyle \mathrm{F}_{1}$ progeny.

(a)

What colour of the stem would you expect in their $\displaystyle \mathrm{F}_{1}$ progeny and why?

(b)

Give the percentage of purple-stemmed plants if $\displaystyle \mathrm{F}_{1}$ plants are allowed to self-pollinate to produce $\displaystyle \mathrm{F}_{2}$ progeny.

(c)

Write the ratio between GG and gg plants in the $\displaystyle \mathrm{F}_{2}$ progeny?