If white colour flower of Antirrhinum sp. successfully crossed with the pink colour flower, what would be the proportion of white and pink color flowers in the next generation?

1:1

The correct answer is Option (1) → 1:1    

In Antirrhinum, flower color shows incomplete dominance, meaning:

• RR = Red
• Rr = Pink (intermediate)
• rr = White

White flower (rr) is crossed with Pink flower (Rr)

rr × Rr

Now let's perform the Punnett square:

 Resulting Genotypes:

• 50% Rr (Pink)
• 50% rr (White)
• 50% White and 50% Pink flowers in the next generation.