The occurrence of female advantage, its proximal causes and its variation within and among gynodioecious species. X-chromosome inactivation: an essential feature of normal spermiogenesis in male heterogametic organisms. A number of these X genes have Y homologues, which may or may not carry out the same function as the X copy also see next section.
Trends Ecol Evol 89— Sex-dependent gene expression of the Drosophila transcriptome.
View Article Google Scholar 7. Even though the outcome of sex determination—whether an individual produces relatively few large ova or many small sperm—is strongly conserved, a bewildering number of underlying mechanisms can trigger development as either a male or female . X-linked diseases present a range of phenotypes, from relatively benign colour blindness through life-limiting Duchenne and Becker muscular dystrophies to embryonic lethality, as in incontinentia pigmenti .
Wijchers P. Sex-dependent gene expression of the Drosophila transcriptome. These genes could be tumor suppressors that are required in at least one copy to prevent oncogenesis. The top genotype represents F1 male hybrids and the middle genotype represents F1 female hybrids.
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Nature Landscape of X chromosome inactivation across human tissues. M refers to meiosis, F to fertilization. Renault N.