Abstract:
:In order to clarify the genetic linkage groups of the Japanese brown frog Rana japonica, and compare them with those of other vertebrates, the inheritance of 10 enzyme and blood protein loci was examined in 267 offspring derived from 18 crosses using 10 males heterozygous at these loci. Most of the segregation tests exhibited no significant deviations from the expected normal Mendelian ratios. Of 32 pairs of loci tested for linkage, 29 pairs showed independent assortment in all crosses examined. In the three other locus pairs, between ADH-1 and Alb, IDH-1 and Hb-1, and LDH-B and MPI, all offspring analyzed were parental, and there were no recombinants. These three linkage groups comprising six loci were thus established in R. japonica, whereas no linkage between the other four loci, AAT-1, ADA, GPI, and PEP-A, was observed.
journal_name
Biochem Genetjournal_title
Biochemical geneticsauthors
Sumida Mdoi
10.1007/BF00554413subject
Has Abstractpub_date
1996-10-01 00:00:00pages
375-88issue
9-10eissn
0006-2928issn
1573-4927journal_volume
34pub_type
杂志文章abstract::Neurospora crassa can utilize numerous compounds including certain amino acids as a sole nitrogen source. Mutants of the nit-2 locus, a regulatory gene which is postulated to mediate nitrogen catabolite repression, are deficient in the ability to utilize several amino acids as well as other nitrogen sources used by wi...
journal_title:Biochemical genetics
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