Sex Determination: Why So Many Ways of Doing It? | PLOS Biology Skip to main content
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Speciation is a fundamental evolutionary process, the knowledge of which is crucial for
understanding the origins of biodiversity. Genomic approaches are an increasingly …

Genomic analysis of many nonmodel species has uncovered an incredible diversity of sex
chromosome systems, making it possible to empirically test the rich body of evolutionary …

To date, more than 20 different vertebrate master sex-determining genes have been
identified on different sex chromosomes of mammals, birds, frogs and fish. Interestingly, six …

Sexual reproduction is a fundamental aspect of life. It is defined by the occurrence of meiosis
and the fusion of two gametes of different sexes or mating types. Sex-determination …

Males and females often differ in their fitness optima for shared traits that have a shared
genetic basis, leading to sexual conflict. Morphologically differentiated sex chromosomes …

Heterogametic sex chromosomes have evolved independently in various lineages of
vertebrates. Such sex chromosome pairs often contain nonrecombining regions, with one of …

How and Why Chromosome Inversions Evolve | PLOS Biology Skip to main content
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Current theory proposes that degenerated sex chromosomes—such as the mammalian Y—
evolve through three steps:(i) recombination arrest, linking male-beneficial alleles to the Y …

Sexual reproduction is prevalent across diverse taxa. However, sex-determination
mechanisms are so diverse that even closely related species often differ in sex …