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What is meiotic sex chromosome inactivation? Meiotic sex chromosome inactivation, commonly referred to as MSCI, is an epigenetic… Expand All snake species exhibit genetic sex determination with the ZZ/ZW type of sex chromosomes. To investigate the origin and… Expand We review some recently published results on sex chromosomes in a diversity of species. We focus on several fish and some plants… Expand In birds and mammals, differences in development between the sexes arise from the differential actions of genes that are encoded… Expand During meiotic prophase in male mammals, the X and Y chromosomes condense to form a macrochromatin body, termed the sex, or XY… Expand Sex determination systems in plants have evolved many times from hermaphroditic ancestors (including monoecious plants with… Expand In many sexually dimorphic species, a mechanism is required to ensure equivalent levels of gene expression from the sex… Expand Human sex chromosomes evolved from autosomes. Nineteen ancestral autosomal genes persist as differentiated homologs on the X and… Expand In many species, sex is determined by a system based on X and Y chromosomes, the latter having lost much of their genetic… Expand Structurally distinct sex chromosomes (X and Y) are the most familiar mode of genetic sex determination and have evolved… Expand