Question

For a gene, if AA= male plant, BB= female plant, find out the genotype of endosperm and embryo.

• A. AAB, BBA
• B. AAB, AB
• C. ABB, AB
• D. BBA, AAB

Answer 1

The correct option is C ABB, AB

A) The genotype of the endosperm is decided by two polar nuclei and one sperm nuclei and all these are haploid. So the genotype is ABB in which A comes from male and BB comes from two female polar nuclei and its ploidy becomes triploid.

B) In embryo as one sperm nuclei and one ovum is fused and both are haploid the genotype is AB in which A comes from male nuclei and B come from female nuclei and it ploidy becomes diploid.

So the correct option is 'ABB, AB'.