A parent with an S₁S₂ genotype exhibiting sporophytic self-incompatibility can potentially fertilize which of the following plant genotypes of the same species with pollen grains?
A) S₁S₃
B) S₂S₃
C) S₃S₄
D) S₁S₄
E) Half of all the pollen grains could be successful.

Question

Quizplus · Accepted Answer

Sporophytic self-incompatibility in plants prevents fertilization by pollen with an S-allele matching either of the parent plant's S-alleles. The only genotype listed that does not share an S-allele with the parent's S₁S₂ genotype is S₃S₄, allowing for successful fertilization.

A Parent with an S₁S₂ Genotype Exhibiting Sporophytic Self-Incompatibility Can