Abstract
The heritability of the shape of the main species-specific morphological trait for the Drosophila virilis group--the male mating organ has been analyzed using the hybrid males D. virilis x D. lummei and D. virilis x D. novamexicana. The results suggest an increase in the share of the characters with a recessive status in the evolutionarily younger species and demonstrate the role of sex chromosomes in the implementation of a dominant or recessive status of the trait. The roles of additive and epistatic components of the total variation in the evolution of dominance status, shown in several known theoretical models and confirmed by our data, are considered. The published data on sterility of hybrid males in interspecific crosses are discussed from the standpoint of the evolution of dominance.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
