CBSE 2023 · Region 2 · Set 1 · Q23

Mendel crossed a pure tall pea plant (TT) with a pure short pea plant (tt) and obtained all tall plants in $\displaystyle \mathrm{F}_{1}$ generation.

(a)

What is the gene combination present in the plants of $\displaystyle \mathrm{F}_{1}$ generation ?

(b)

Give reason why only tall plants are observed in $\displaystyle \mathrm{F}_{1}$ progeny.

(c)

What will be the ratio of the plants obtained in the $\displaystyle \mathrm{F}_{2}$ generation when $\displaystyle \mathrm{F}_{1}$ plants are self-pollinated ?