CBSE 2026 · Region 3 · Set 2 · Q13

A blue colour flower (BB) bearing plant is crossed with a plant with white coloured flowers (bb).

(a)

State the colour of the flowers you would expect in their $\displaystyle \mathrm{F}_{1}$ progeny.

(b)

What must be the percentage of white flower plants in the $\displaystyle \mathrm{F}_{2}$ generation, if the $\displaystyle \mathrm{F}_{1}$ plants are self-pollinated ?

(c)

State the expected ratio of genotypes BB and bb in $\displaystyle \mathrm{F}_{2}$ progeny.

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