The Program of Sex Chromosome Pairing in Meiosis Is Highly Conserved Across Marsupial Species: Implications for Sex Chromosome Evolution

Genetics | June 1, 2005| | Copyright

ABSTRACT

Marsupials present a series of genetic and chromosomal features that are highly conserved in very distant species. One of these features is the absence of a homologous region between X and Y chromosomes. According to this genetic differentiation, sex chromosomes do not synapse during the first meiotic prophase in males, and a special structure, the dense plate, maintains sex chromosome association. In this report we present results on the process of meiotic sex chromosome pairing obtained from three different species, Thylamys elegans, Dromiciops gliroides, and Rhyncholestes ...

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