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- W3036682705 abstract "Centric fusion plays an important role in karyotype evolution as a mechanism of chromosomal change. Centromeric Heterchromatic regions (CeHR) can be observed in optical and electron microscopes and their location during meiotic stages should be fundamental for the occurrence of centric fusion. This work is concerned with centromeric he terochromatin orientation and cytochemistry of this structure in meiotic male cells of Phyllotis darwini rupestris, obtained from their natural region. This is a Chilean species with diploid number 38, all chromosomes biarmed (meta- and submetacentric). Heterochromatin is always located in the centromere region, except the Y chromosome. Spreads for light microscopy were made from testicular tissues and stained with Arrighi and Hsu (1971) procedure. For electron microscope pieces of seminiferous tubules were fixed in glutaraldehyde 3% in 0.2M cacodylate buffer pH 7.2 and postfixed in osmium tetroxide 1%. Tissue was stained in block with 5% uranyl acetate, dehydrated in ethanol and embedded in Epon 812." @default.
- W3036682705 created "2020-06-25" @default.
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- W3036682705 date "1978-01-01" @default.
- W3036682705 modified "2023-09-25" @default.
- W3036682705 title "Centromeric heterochromatin in phyllotis darwini" @default.
- W3036682705 cites W2022395114 @default.
- W3036682705 cites W2087217739 @default.
- W3036682705 doi "https://doi.org/10.1017/s0424820100081942" @default.
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