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果蝇 J、U 染色体上酶位点的细胞遗传学定位。

Cytogenetic Mapping of Enzyme Loci on Chromosomes J and U of DROSOPHILA SUBOBSCURA.

机构信息

Lehrstuhl für Populationsgenetik, Institut für Biologie II, Universität Tübingen, Auf der Morgenstelle 28, D-7400 Tübingen, Federal Republic of Germany.

出版信息

Genetics. 1984 Dec;108(4):913-26. doi: 10.1093/genetics/108.4.913.

DOI:10.1093/genetics/108.4.913
PMID:17246243
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1224273/
Abstract

Enzyme loci located on chromosome J and U were mapped cytologically by means of a Y translocation technique. A linkage map of the two chromosomes was established in a parallel experiment and the recombination frequency in different regions of the chromosomes determined. A comparison of the cytogenetic localization of the enzyme genes in D. subobscura and D. melanogaster indicates that many paracentric inversions must have taken place in the course of divergent evolution. However, no displacements of genes from one element to another due to pericentric inversions, reciprocal translocations or transposing elements can be observed. In spite of the large number of structural rearrangements that have occurred in the phylogeny of the genus Drosophila, gross similarities of banding pattern in homologous regions of the chromosomes of the two species become apparent.

摘要

通过 Y 染色体易位技术，对位于染色体 J 和 U 上的酶基因座进行了细胞学定位。在一个平行实验中建立了这两条染色体的连锁图谱，并确定了染色体不同区域的重组频率。对 D. subobscura 和 D. melanogaster 中酶基因的细胞遗传学定位进行比较，表明在趋异进化过程中发生了许多臂间倒位。然而，没有观察到由于着丝粒倒位、相互易位或转座元件而导致基因从一个元件位移到另一个元件的情况。尽管果蝇属的系统发生过程中发生了大量的结构重排，但在这两个物种的染色体同源区域的带型仍存在明显的相似性。

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本文引用的文献

1
A Y-translocation method for localizing enzyme genes on Drosophila polytene chromosomes.一种用于在果蝇多线染色体上定位酶基因的Y易位方法。
Experientia. 1984 Feb 15;40(2):203-6. doi: 10.1007/BF01963601.
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A molecular approach to the study of genic heterozygosity in natural populations. 3. Direct evidence of coadaptation in gene arrangements of Drosophila.一种研究自然种群基因杂合性的分子方法。3. 果蝇基因排列中共适应的直接证据。
Proc Natl Acad Sci U S A. 1968 Feb;59(2):398-405. doi: 10.1073/pnas.59.2.398.
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Genic variation in central and marginal populations of Drosophila subobscura.果蝇（Drosophila subobscura）中心种群和边缘种群的基因变异。
Hereditas. 1973;75(1):33-45. doi: 10.1111/j.1601-5223.1973.tb01140.x.
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The genetics of Drosophila subobscura populations. V. A study of linkage disequilibrium in natural populations between genes and inversions of the E chromosome.果蝇亚暗果蝇种群的遗传学。V. E染色体基因与倒位在自然种群中的连锁不平衡研究。
Genetics. 1975 Jun;80(2):331-47. doi: 10.1093/genetics/80.2.331.

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