In flowering plants that are self-incompatible, a genetically controlled self-incompatible mechanism
A) determines pollen carrying the same S allele as the pistil it lands on as incompatible.
B) determines pollen carrying a different S allele from the pistil it lands on as incompatible.
C) stops eggs from being fertilised by the same species pollen from a genetically different plant.
D) prevents the formation of hybrid offspring from closely related species of plants.
E) ensures that eggs undergo apomixis after fertilisation.

Question

Quizplus · Accepted Answer

Self-incompatibility in flowering plants is a mechanism to prevent inbreeding and promote genetic diversity. It involves the recognition and rejection of pollen that carries the same S allele as the pistil it lands on, thus preventing fertilization by genetically similar pollen.

In Flowering Plants That Are Self-Incompatible, a Genetically Controlled Self-Incompatible