THE STA2 AND MEL1 GENES OF SACCHAROMYCES-CEREVISIAE ARE IDIOMORPHIC

被引：9

作者：

LYNESS, CA ^{[1
]}

JONES, CR ^{[1
]}

MEADEN, PG ^{[1
]}

机构：

[1] HERIOT WATT UNIV, INT CTR BREWING & DISTILLING, EDINBURGH EH14 4AS, MIDLOTHIAN, SCOTLAND

来源：

CURRENT GENETICS | 1993年 / 23卷 / 01期

关键词：

SACCHAROMYCES-CEREVISIAE; GENE MAPPING; IDIOMORPHISM;

D O I：

10.1007/BF00336753

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

The STA2 (glucoamylase) gene of Saccharomyces cerevisiae has been mapped close to the end of the left arm of chromosome II. Meiotic analysis of a cross between a haploid strain containing STA2, and another strain carrying the melibiase gene MEL1 (which is known to be at the end of the left arm of chromosome II) produced parental ditype tetrads only. Since there is no significant DNA sequence similarity between the STA2 and MELl genes, or their respective flanking regions, we conclude that these two genes are carried by separate non-hybridizing sequences of chromosomal DNA, either of which can reside at the end of the left arm of chromosome II. By analogy with the mating-type locus of Neurospora crassa, we suggest that the STA2 and MEL1 genes are idiomorphs with respect to one another.

引用

页码：92 / 94

页数：3

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