Cytogenetic examination of pre-implantation blastocysts of ewes mated to rams heterozygous for the Massey I (t1) translocation
- 1 January 1977
- journal article
- research article
- Published by S. Karger AG in Cytogenetic and Genome Research
- Vol. 18 (2) , 82-89
- https://doi.org/10.1159/000130751
Abstract
One hundred-and-two 13- to 18-day blastocysts were collected from 98 Scottish Blackface ewes mated to one of four New Zealand Romney rams heterozygous for the Massey I (t1) translocation. The karyotype of 75 blastocysts was established, of which 22 were 54, XY, 18 were 54, XX, 20 were 53, XY, t1, and 15 were 53, XX, tι. It is suggested that these results indicated that there was no increase in embryonic loss in ewes mated to rams heterozygous for the Massey I (t1 translocation and that the unbalanced secondary spermatocytes in heterozygous males probably did not mature to spermatozoa.This publication has 3 references indexed in Scilit:
- PRE-ZYGOTIC SELECTION OF MALE GAMETES IN LABORATORY MICE1976
- THE IDIOGRAM OF THE SHEEP WITH PARTICULAR REFERENCE TO SECONDARY CONSTRICTIONSCanadian Journal of Genetics and Cytology, 1967
- Chromosome Analysis of Peripheral Leucocytes of the SheepJournal of Animal Science, 1965