First Author | Gorlov IP | Year | 1991 |
Journal | Heredity (Edinb) | Volume | 66 ( Pt 3) |
Pages | 453-8 | PubMed ID | 1880050 |
Mgi Jnum | J:11391 | Mgi Id | MGI:59827 |
Doi | 10.1038/hdy.1991.55 | Citation | Gorlov IP, et al. (1991) Positional control of chiasma distribution in the house mouse. Chiasma distribution in mice homozygous and heterozygous for an inversion in chromosome 1. Heredity (Edinb) 66(Pt 3):453-8 |
abstractText | An examination of the chiasma distribution in chromosome 1 of male mice homozygous and heterozygous for a distal inversion In(1) 12Rk and in normal males was carried out. No differences in chiasma distribution were found between homozygotes for the inversion and homozygotes for normal chromosome 1. A significant decrease in the frequency of bivalents bearing chiasmata in the pretelomeric region was found in heterozygotes. This, in its turn, produced a redistribution of chiasmata in the proximal non-inverted part of bivalent 1. These results could be interpreted as evidence for positional control of the chiasma distribution pattern: the distance of certain parts of the chromosome from the telomere and chiasmata interference are more important for determination of the chiasma frequency in a given region than its genetic content. |