Identification of the sex chromosomes of the medaka | 水產百科網
由MMatsuda著作·1998·被引用88次—Inthemedaka,Oryziaslatipes,whichdoesnothavecytologicallyrecognizablesexchromosomes,thesexisgeneticallydeterminedandthemechanismofsex ...
In the medaka, Oryzias latipes, which does not have cytologically recognizable sex chromosomes, the sex is genetically determined and the mechanism of sex determination (XX/XY) can be revealed by genetic crosses using a particular pigment gene. In a previous study, we isolated a sex-linked DNA marker (SL1) using the genomic differences between inbred strains of medaka. In the present paper, we further isolated another sex-linked clone (pHO5.110). The pHO5. 110-related sequences were tightly linked to sex in O. latipes. We designated the locus of the pHO5.110-related sequence on sex chromosomes of medaka as Sex-Linked 2 (SL2). Southern blot analyses suggested that the pHO5.110-related sequence was tandemly repetitive in the medaka genome. Using the clone as a probe for FISH analysis, strong hybridization signals were obtained in a couple of chromosomes that formed one of two large submetacentric chromosome pairs. The...
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【七彩塘鱧Tateurndina ocellicauda】塘鱧科
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