Snake W Sex Chromosome: The Shadow of Ancestral Amniote Super-Sex Chromosome
Cells, 2020 Heteromorphic sex chromosomes, particularly the ZZ/ZW sex chromosome system of birds and some reptiles, undergo evolutionary dynamics distinct from those of autosomes. The W sex chromosome is a unique karyological member of this heteromorphic pair, which
Worapong Singchat +6 more
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The Origin of a New Sex Chromosome by Introgression between Two Stickleback Fishes. [PDF]
, 2019 Introgression is increasingly recognized as a source of genetic diversity that fuels adaptation. Its role in the evolution of sex chromosomes, however, is not well known. Here, we confirm the hypothesis that the Y chromosome in the ninespine stickleback,
Abbott +78 more
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Recent sex chromosome divergence despite ancient dioecy in the willow Salix viminalis. [PDF]
, 2017 Sex chromosomes can evolve when recombination is halted between a pair of chromosomes, and this can lead to degeneration of the sex-limited chromosome.
Berlin, S. +4 more
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A trans-species missense SNP in Amhr2 is associated with sex determination in the tiger pufferfish, Takifugu rubripes (fugu). [PDF]
PLoS Genetics, 2012 Heterogametic sex chromosomes have evolved independently in various lineages of vertebrates. Such sex chromosome pairs often contain nonrecombining regions, with one of the chromosomes harboring a master sex-determining (SD) gene. It is hypothesized that
Takashi Kamiya +15 more
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Non-random chromosome positioning in mammalian sperm nuclei, with migration of the sex chromosomes during late spermatogenesis [PDF]
, 2005 Chromosomes are highly organized and compartmentalized in cell nuclei. The analysis of their position is a powerful way to monitor genome organization in different cell types and states.
Abeydeera, L +3 more
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Partial dosage compensation in Strepsiptera, a sister group of beetles. [PDF]
, 2015 Sex chromosomes have evolved independently in many different taxa, and so have mechanisms to compensate for expression differences on sex chromosomes in males and females. Different clades have evolved vastly different ways to achieve dosage compensation,
Bachtrog, Doris, Mahajan, Shivani
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Meiotic sex chromosome cohesion and autosomal synapsis are supported by Esco2.
, 2020 In mitotic cells, establishment of sister chromatid cohesion requires acetylation of the cohesin subunit SMC3 (acSMC3) by ESCO1 and/or ESCO2. Meiotic cohesin plays additional but poorly understood roles in the formation of chromosome axial elements (AEs)
Biswas, U. +6 more
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Independent stratum formation on the avian sex chromosomes reveals inter-chromosomal gene conversion and predominance of purifying selection on the w chromosome [PDF]
, 2014 We used a comparative approach spanning three species and 90 million years to study the evolutionary history of the avian sex chromosomes. Using whole transcriptomes, we assembled the largest cross-species dataset of W-linked coding content to date.
Harrison, PW +4 more
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Conflict on the sex chromosomes: cause, effect, and complexity [PDF]
, 2014 Intralocus sexual conflict and intragenomic conflict both affect sex chromosome evolution and can in extreme cases even cause the complete turnover of sex chromosomes.
Hosken, DJ, Mank, JE, Wedell, N
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BMC Genetics, 2011 Background The accumulation of repetitive sequences such as microsatellites during the differentiation of sex chromosomes has not been studied in most squamate reptiles (lizards, amphisbaenians and snakes), a group which has a large diversity of sex ...
Kratochvíl Lukáš +2 more
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