Question

If a homozygous tall pistillate plant is crossed with a dwarf staminate plant , the genotype of endosperm will be __________.

• A. TTt
• B. ttT
• C. ttt
• D. TTT

Answer 1

The correct option is B ttT

• The staminate flower will give rise to two male gametes each with T genotype.
• The pistillate flower will produce secondary nucleus with the genotype tt.
• Therefore the genotype of endosperm would be T+tt i.e. Ttt (3n).
• So, (B) is the correct option.