When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is

Question

When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is (A) tetraploidy (B) pentaploidy (C) diploidy (D) triploidy

Tardigrade Admin · Accepted Answer

Secondary nucleus of female would have 2n chromosome that would be fertilized by male gametes which in this case would be 2n because it is formed from tetraploid male. Hence, endosperm would be 2n+2n=4n .

Q. When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is

tetraploidy

pentaploidy

diploidy

triploidy

Secondary nucleus of female would have $2 n$ chromosome that would be fertilized by male gametes which in this case would be $2 n$ because it is formed from tetraploid male. Hence, endosperm would be $2 n + 2 n = 4 n$ .