Report of the first workshop on the genetic map of bovine chromosome 23.
A report of the first workshop on the genetic map of bovine chromosome 23 (BTA23) is given. Five laboratories contributed data from 29 loci, including a total 11586 informative genotypes. The combined pedigrees represented 1930 potentially informative meioses. Eighteen of the 29 loci were common to two or more data sets and were used to construct a framework linkage map of BTA23. Twelve of the 18 could be ordered on the linkage map with a likelihood ratio of greater than 1000:1. Thus, a low resolution consensus map was constructed with a high level of support for order. The sex-averaged, female and male maps span 54.5, 52.7 and 55.8 cM, respectively. Sex-specific differences in recombination frequency were identified for eight pairs of framework loci. Average genetic distance between framework loci on the sex-averaged map is 5.0 cM.
Beever
J E
JE
University of Illinois, Department of Animal Science, Urbana, IL 61801, USA.
Lewin
H A
HA
Barendse
W
W
Andersson
L
L
Armitage
S M
SM
Beattie
C W
CW
Burns
B M
BM
Davis
S K
SK
Kappes
S M
SM
Kirkpatrick
B W
BW
Ma
R Z
RZ
McGraw
R A
RA
Stone
R T
RT
Taylor
J F
JF
D000818:Animals; D002417:Cattle / Q000235:genetics*; D002874:Chromosome Mapping; D002875:Chromosomes / Q000235:genetics*; D005260:Female; D008126:Lod Score; D008297:Male; D010375:Pedigree; D012737:Sex Factors