PMID: 9166586Jun 1, 1997Paper

Comparative chromosome painting between two marsupials: origins of an XX/XY1Y2 sex chromosome system

Mammalian Genome : Official Journal of the International Mammalian Genome Society
R ToderJ A Marshall-Graves

Abstract

Cross-species chromosome painting was used to investigate genome rearrangements between tammar wallaby Macropus eugenii (2n = 16) and the swamp wallaby Wallabia bicolor (2n = 10female symbol/11male symbol), which diverged about 6 million years ago. The swamp wallaby has an XX female:XY1Y2 male sex chromosome system thought to have resulted from a fusion between an autosome and the small original X, not involving the Y. Thus, the small Y1 should represent the original Y and the large Y2 the original autosome. DNA paints were prepared from flow-sorted and microdissected chromosomes from the tammar wallaby. Painting swamp wallaby spreads with each tammar chromosome-specific probe gave extremely strong and clear signals in single-, two-, and three-color FISH. These showed that two tammar wallaby autosomes are represented unchanged in the swamp wallaby, two are represented by different centric fusions, and one by a tandem fusion to make the very long arms of swamp wallaby Chromosome (Chr) 1. The large swamp wallaby X comprises the tammar X as its short arm, and a tandemly fused 7 and 2 as the long arm. The acrocentric swamp wallaby Y2 is a 2/7 fusion, homologous with the long arm of the X. The small swamp wallaby Y1 is confirmed as ...Continue Reading

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Citations

Sep 20, 2005·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·Amber E AlsopJennifer A Marshall Graves
Sep 12, 2006·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·N SankovicJ A Marshall Graves
Sep 28, 2002·Trends in Genetics : TIG·Jennifer A Marshall Graves, Michael Westerman
Feb 20, 1998·Current Opinion in Genetics & Development·J Wienberg, R Stanyon
Aug 31, 2001·ILAR Journal·Paul B. Samollow
Aug 31, 2001·ILAR Journal·Roland ToderJennifer A. Marshall Graves
Jun 29, 2010·The Journal of Heredity·Michael WestermanMark S Springer
Feb 5, 2003·Genome Research·Fadi J CharcharJennifer A Marshall Graves
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Mar 5, 2014·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·Martina PokornáLukáš Kratochvíl
Oct 3, 2012·Evolution; International Journal of Organic Evolution·Kohta Yoshida, Jun Kitano
Apr 18, 2014·Journal of Evolutionary Biology·L A Weingartner, L F Delph
Mar 4, 2003·EMBO Reports·Matthew J Wakefield, Jennifer A Marshall Graves
Jul 11, 2012·Cytogenetic and Genome Research·J E DeakinW Rens
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Apr 7, 2018·Molecular Ecology·Michael J O'Neill, Rachel J O'Neill
Jul 25, 2019·International Journal of Molecular Sciences·Dongdong XuMarcelo de Bello Cioffi
Jul 27, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Alexandr SemberMarcelo de Bello Cioffi

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