Nondisjunction frequencies in Robertsonian heterozygotes from natural populations of the common shrew, Sorex araneus L.
- 1 January 1984
- journal article
- research article
- Published by S. Karger AG in Cytogenetic and Genome Research
- Vol. 38 (4), 265-271
- https://doi.org/10.1159/000132073
Abstract
Pregnant female common shrews were collected from an area of Robertsonian polymorphism, involving five different arm combinations, around Oxford (England). The females and their fetuses were karyotyped, and the karyotypes of the sires were deduced. Ten pregnancies where at least one parent was known to be either a single or double Robertsonian heterozygote were available for analysis. From these pregnancies, upper and lower estimates of anaphase I nondisjunction arising from Robertsonian heterozygosity were calculated to be 1.0–2.5% per heterozygous arm combination and 1.5–3.7% per heterozygous parent. One trisomic fetus with retarded development was identified. This trisomy can be attributed to anaphase I nondisjunction of a trivalent in a female Robertsonian heterozygote.Keywords
This publication has 11 references indexed in Scilit:
- A MOUSE TRANSLOCATION WITH 38 AND 39 CHROMOSOMES BUT NORMAL N. F.Hereditas, 2009
- Cytogenetics of preimplantation embryos sired by bulls heterozygous for the 1/29 translocationHereditas, 2009
- A wild common shrew (Sorex araneus) with an XXY sex chromosome constitutionReproduction, 1984
- Microdensitometric evaluation of the DNA content, as ploidy parameter, of spermatozoa in the polymorphic chromosomal system of Akodon molinae cabrera (rodentia, cricetidae)Gamete Research, 1982
- Aneuploid spermatocyte frequency in domestic sheep heterozygous for three Robertsonian translocationsReproduction, 1981
- Meiosis and spermatogenesis in bulls heterozygous for a presumptive 1/29 Robertsonian translocationReproduction, 1978
- Chiasma counts and non-disjunction frequencies in a normal ram and in rams carrying the Massey I (t1) Robertsonian translocationReproduction, 1978
- Cytogenetic examination of pre-implantation blastocysts of ewes mated to rams heterozygous for the Massey I (t1) translocationCytogenetic and Genome Research, 1977
- A Mouse Translocation Giving a Metacentric Marker ChromosomeCytogenetic and Genome Research, 1967
- PRENATAL MORTALITY IN MAMMALSBiological Reviews, 1948