CBSE 2024 · Region 4 · Set 3 · Q30

(a)

Name any two pairs of contrasting characters other than height used by Mendel in his experiments.

(b)

On crossing a tall and a short pea plant, Mendel obtained $\displaystyle \mathrm{F}_{1}$ generation in which all pea plants were tall.

(i)

Are these plants exactly the same as tall plants of the parent generation ? Write their gene combination.

(ii)

Give the percentage of short plants obtained in $\displaystyle \mathrm{F}_{2}$ generation when $\displaystyle \mathrm{F}_{1}$ plants are self-pollinated.

(iii)

In what ratio would you find TT and Tt in $\displaystyle \mathrm{F}_{2}$ generation ?