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首页> 外文期刊>Folia Biologica: A Quarterly Journal of Biological Research >Karyotype and C-banding Pattern of the Domestic Geese Anser anser Populations (Aves: Anatidae) in Egypt
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Karyotype and C-banding Pattern of the Domestic Geese Anser anser Populations (Aves: Anatidae) in Egypt

机译：埃及国内鹅大雁大雁种群的核型和C带谱

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摘要

The karyotype and C-banding pattern of domestic Greylag geese Anser anser anser populations collected from five localities in El Minia, Egypt, that have either whitish grey or white feather color patterns were described. All populations have a diploid number of 2n= 80 chromosomes. Of the 80 chromosomes, 10 pairs, including ZW chromosomes, were macrochromosomes and the remaining 30 pairs were microchromosomes. Slight variation in the size of macrochromosomes was observed amongst populations. However, obvious variation of C-banding distribution was found and attributed to variation of euchromatin content and its correlation with chromosome size and arrangement of constitutive heterochromatin Nevertheless, significant variation in the mean number of C-heterochromatin blocks in microchromosomes was attributed to either transformation of heterochromatin into euchromatin and vice versa or to involvement of structural chromosomal aberrations during karyotype evolution. The present results show that A. anser populations common in Egypt could be distinguished from those of A. anser andA.cygnoides occurring elsewhere in Europe and Asia via variability in chromosome morphology ofpairs nos. 2, 3 and 4.
机译：描述了从埃及的埃尔米尼亚（El Minia）五个地区收集的灰白色或白色羽毛彩色图案的家养灰雁大雁大雁大雁的核型和C带特征。所有种群的二倍体数均为2n = 80个染色体。在80条染色体中，包括ZW染色体在内的10对是大染色体，其余30对是微染色体。在人群中观察到大染色体大小的轻微变化。然而，发现了C条带分布的明显变化，并归因于常染色质含量的变化及其与染色体大小和组成型异染色质排列的相关性。然而，微染色体中C-异染色质嵌段平均数的显着变化归因于异染色质转化为常染色质，反之亦然，或在核型进化过程中涉及结构染色体畸变。目前的结果表明，通过配对对的染色体形态变异，可以将埃及常见的A. anser种群与欧洲和亚洲其他地方的A. anser和A.cygnoides种群区分开。 2 3 3

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