Hemizygosity Enhances Purifying Selection: Lack of Fast-Z Evolution in Two Satyrine Butterflies
The fixation probability of a recessive beneficial mutation is increased on the X or Z chromosome, relative to autosomes, because recessive alleles carried by X or Z are exposed to selection in the heterogametic sex. This leads to an increased dN/dS ratio on sex chromosomes relative to autosomes, a...
| Main Authors: | , , , , |
|---|---|
| Format: | Online |
| Language: | English |
| Published: |
Oxford University Press
2016
|
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5174731/ |