Abstract:
:The Sex-Ratio (SR) phenomenon is associated with the X chromosome of many species of Drosophila. Males carrying SR transmit predominantly sperm bearing the X chromosome. SR, therefore, has a very significant advantage in segregation. This paper provides an experimental analysis of the role of virility selection in preventing the fixation of SR. SR males are found to suffer substantial virility reduction when mated with nonvirgin females but not with virgin females. The reduced virility arises because they are weaker in sperm displacement and are discriminated against by nonvirgin females. The virility deficiency of SR males is even more severe at low temperatures.
journal_name
Geneticsjournal_title
Geneticsauthors
Wu CIsubject
Has Abstractpub_date
1983-11-01 00:00:00pages
651-62issue
3eissn
0016-6731issn
1943-2631journal_volume
105pub_type
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