Abstract
Abstract Recent methodological approaches have expanded our understanding of Y chromosome sequence, revealed unexpected Y diversity, and sparked a growing realization of its importance in evolutionary processes. To fully understand the diversity and importance of the Y chromosome, we suggest the need to move from a holotype Y chromosome sequence, based on a single individual and meant to represent the species, to a thorough understanding of Y chromosome haplotype diversity, its phenotypic implications, and its phylogeographic distribution. Additionally, the Y chromosome may play an important role in two key rules of speciation that have otherwise been attributed to the X, namely Haldane’s Rule and the Large-X Effect. Emerging genomic tools and analytical approaches are just now giving us the means to ask how important this small, often forgotten region of the genome is in evolutionary processes.
Published Version
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