
TY  - JOUR
A1  - Bennett, JH 
T1  - The Existence and Stability of Selectively Balanced Polymorphism at a Sex-Linked Locus
JF  - Australian Journal of Biological Sciences
JO  - Aust. Jnl. Of Bio. Sci.
Y1  - 1958
VL  - 11
IS  - 4
SP  - 598
EP  - 602
KW  - 
UR  - https://doi.org/10.1071/BI9580598 
N2  - Necessary and sufficient conditions are given for the existence and stability of a selectively balanced polymorphism at a sex-linked locus. It is shown that selective superiority of the heterozygote is neither necessary nor sufficient and also that the occurrence of heterozygotes with a frequency greater than that of homozygotes does not necessarily indicate that the heterozygote has a selective advantage over both homozygotes. These results are considered in relation to Wallace's published data for populations of Drosophila pseudoobscura in which selection is acting on the sex-linked condition "sex ratio". 
ER  -

