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Population Genetics of Sex Determination in Mytilus Mussels: Reanalyses and a Model
Author(s) -
Yoichi Yusa,
Sophie Breton,
Walter R. Hoeh
Publication year - 2013
Publication title -
journal of heredity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 92
eISSN - 1471-8505
pISSN - 0022-1503
DOI - 10.1093/jhered/est014
Subject(s) - biology , sex ratio , mytilus , offspring , genetics , population , allele , inheritance (genetic algorithm) , zoology , evolutionary biology , gene , demography , ecology , pregnancy , sociology
Large variations in offspring sex ratio have been reported in Mytilus mussels, which show doubly uniparental inheritance of mitochondria (DUI). Here, we reanalyzed the published sex ratio data, using simple population genetics concepts and logistic regression. Contrary to previous studies that detected only maternal effects, we found both paternal and maternal effects on the offspring sex ratio. We propose that sex in Mytilus is controlled by a pair of nuclear sex ratio alleles expressed in the mother and by minor sex-determining genes inherited from the father and also possibly from the mother.

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