Question
Biology Question on Principles of Inheritance and Variation
When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is
A
Pentaploidy
B
Diploidy
C
Triploidy
D
Tetraploidy
Answer
Tetraploidy
Explanation
Solution
When the male plant is tetraploid, it typically produces diploid gametes through meiotic division. On the other hand, the female plant is diploid, resulting in the formation of haploid gametes during meiosis. The endosperm cell is typically created through double fertilization, involving the fusion of two polar nuclei and one male gamete. This results in the formation of the endosperm cell, with the polar nuclei being diploid while the male gamete can be either diploid or tetraploid.