LINKAGE RELATIONSHIPS AMONG 5 ENZYME-CODING GENE LOCI IN THE COPEPOD TIGRIOPUS-CALIFORNICUS - A GENETIC CONFIRMATION OF ACHIASMATIC MEIOSIS
LINKAGE RELATIONSHIPS AMONG 5 ENZYME-CODING GENE LOCI IN THE COPEPOD TIGRIOPUS-CALIFORNICUS - A GENETIC CONFIRMATION OF ACHIASMATIC MEIOSIS
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DOI：
10.1007/bf00484576
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发表时间：
1981-01-01
影响因子：
2.4
通讯作者：
SWISHER, SG
中科院分区：
文献类型：
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作者：
BURTON, RS;FELDMAN, MW;SWISHER, SG
海洋桡足类T. californicus是使用来自实验室交配的后代的电泳分析来确定的。磷酸葡萄糖异构酶（PGI; EC 5.3.1.9）与谷氨酸-丙酮酸转氨酶（GPT; EC 2.6.1.2）紧密连接，在364个后代中仅观察到1个重组体;谷氨酸-草酰乙酸转氨酶（GOT; EC 2.6.1.1）与PGI-GPT对连接，重组分数为. apprx。0.20雄性双杂合子。磷酸葡萄糖变位酶（PGM; EC 2.7.5.1）和酯酶（EST; EC 3.1.1.1）与PGI、GPT GOT分组无关，该分组被指定为连锁群I。正反交表明雌性T. californicus;这一观察结果证实了先前的报道，雌性虎足虎耳草的减数分裂是无交叉的。
Linkage relationships among 5 polymorphic enzyme-coding gene loci in the marine copepod T. californicus were determined using electrophoretic analysis of progeny from laboratory matings. Phosphoglucose isomerase (PGI; EC 5.3.1.9) was tighly linked to glutamate-pyruvate transaminase (GPT; EC 2.6.1.2), with only 1 recombinant observed in 364 progeny; glutamate-oxaloacetate transaminase (GOT; EC 2.6.1.1) is linked to the PGI-GPT pair, with a recombination fraction of .apprx. 0.20 in male double heterozygotes. Phosphoglucomutase (PGM; EC 2.7.5.1) and an esterase (EST; EC 3.1.1.1) are not linked to the PGI, GPT GOT grouping, which was designated linkage group I. Reciprocal crosses have revealed that no recombination occurs in female T. californicus; this observation confirms a previous report that meiosis in female Tigriopus is achiasmatic.