Selection for the inviability of sterile hybrids.

Abstract excerpt

Complementary lethal, semilethal, and dwarfing genes whose effects appear to be expressed only in (usually sterile) interspecific hybrids are not uncommon in plants. Accounting for these genes by Darwinian selection has been somewhat puzzling. However, if luxuriant, sterile hybrid progeny compete with and tend to eliminate their pure-species half-sibs, genes that are detrimental to the growth and development of...

Topics

• Alleles
• Animals
• Drosophila
• Dwarfism
• Female
• Gene Frequency
• Genes, Lethal
• Gossypium
• Hybrid Vigor
• Hybridization, Genetic
• Infertility
• Male
• Models, Genetic