Ancient Male Recombination Shaped Genetic Diversity of Neo-Y Chromosome inDrosophila albomicans
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چکیده
منابع مشابه
Ancient Male Recombination Shaped Genetic Diversity of Neo-Y Chromosome in Drosophila albomicans.
Researchers studying Y chromosome evolution have drawn attention to neo-Y chromosomes in Drosophila species due to their resembling the initial stage of Y chromosome evolution. In the studies of neo-Y chromosome of Drosophila miranda, the extremely low genetic diversity observed suggested various modes of natural selection acting on the nonrecombining genome. However, alternative possibility ma...
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Chia-Hao Cheng, Ching-Ho Chang, and Hwei-yu Chang (2011) Early-stage evolution of the neo-Y chromosome in Drosophila albomicans. Zoological Studies 50(3): 338-349. Numerous theories have specified that an originally autosomal neo-Y chromosome arm is expected to undergo degenerative evolution. Neosex chromosomes of Drosophila albomicans originated from 2 Robertsonian translocation events, one fo...
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293 Drosophila albomicans (2n = 6) and D. nasuta (2n = 8) belong to the D. nasuta subgroup of the D. immigrans species group (Duda 1940, Wilson et al. 1969). According to molecular evidence, this sibling species pair is young and diverged < 0.5 million yrs ago (Ma) (Chang et al. 1989, Bachtrog 2006). During the divergence of these sibling species, hereditary materials in nuclear (n)DNA and mito...
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The extent of genetic degeneration of the nec-Y chromosome of Drosophila americana ama'cana has been investigated. Three loci, coding for the enzymes enolase, phosphoglycerate kinase and alcohol dehydrogenase, have been localized to chromosome 4 of D. a. americunu, which forms the neo-Y and neo-X chromosomes. Crosses between D. a. americana, and D. virilis or D. montana showed that the loci cod...
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BACKGROUND The three azoospermia factor (AZF) regions of the Y chromosome represent genomic niches for spermatogenesis genes. Yet, the most distal region, AZFc, is a major generator of large-scale variation in the human genome. Determining to what extent this variability affects spermatogenesis is a highly contentious topic in human reproduction. METHODS In this review, an extensive character...
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ژورنال
عنوان ژورنال: Molecular Biology and Evolution
سال: 2015
ISSN: 0737-4038,1537-1719
DOI: 10.1093/molbev/msv221