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.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1237-1245 |
| Number of pages | 9 |
| Journal | Biochemical Genetics |
| Volume | 19 |
| Issue number | 11-12 |
| DOIs | |
| State | Published - Dec 1981 |
| Externally published | Yes |
Keywords
- Tigriopus californicus
- achiasmatic meiosis
- electrophoresis
- linkage
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Biochemistry
- Molecular Biology
- Genetics