Linkage relationships among five enzyme-coding gene loci in the copepod Tigriopus californicus: A genetic confirmation of achiasmatic meiosis
- 1 December 1981
- journal article
- research article
- Published by Springer Nature in Biochemical Genetics
- Vol. 19 (11-12), 1237-1245
- https://doi.org/10.1007/bf00484576
Abstract
Linkage relationships among five polymorphic enzyme-coding gene loci in the marine copepod Tigriopus californicus have been determined using electrophoretic analysis of progeny from laboratory matings. Phosphoglucose isomerase (PGI; EC 5.3.1.9) was found to be tightly linked to glutamate-pyruvate transaminase (GPT; EC 2.6.1.2), with only one 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 approximately 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 has been 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.Keywords
This publication has 4 references indexed in Scilit:
- POPULATION GENETICS OFTIGRIOPUS CALIFORNICUS. II. DIFFERENTIATION AMONG NEIGHBORING POPULATIONSEvolution, 1981
- Population Genetics of Tigriopus californicus (Copepoda: Harpacticoida): I. Population Structure Along the Central California CoastMarine Ecology Progress Series, 1979
- The cytology of achiasmatic meiosis in the female Tigriopus (copepoda)Chromosoma, 1962
- Genetische Probleme der marinen BiologieRevue suisse de zoologie., 1958