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Consensus and comprehensive linkage maps of the bovine sex chromosomes
- Sonstegard, T.S., Barendse, W., Bennett, G.L., Brockmann, G.A., Davis, S., Droegemuller, C., Kalm, E., Kappes, S.M., Kuhn, C., Li, Y.
- Animal genetics 2001 v.32 no.2 pp. 115
- cattle, sex chromosomes, chromosome mapping, genetic markers, linkage (genetics), genotype
- This report summarizes the construction of a consensus and comprehensive linkage maps for bovine sex chromosomes. Five laboratories contributed genotypes for analysis that totalled to 96067 informative meioses generated from 92 marker loci. 14 loci typed by at least 2 laboratories were used to construct consensus linkage maps. The consensus map of the bovine X chromosome (BTAX) was 159.3 cM and the map of the bovine Y chromosome (BTAY) was 20.4 cM. The sex-averaged consensus map constructed from the meiotic pairing region between BTAX and BTAY, and denoted as the pseudoautosomal region, (PAR) covered 20.1 cM. The comprehensive maps were constructed using 90 of the 92 loci. The lengths of the BTAX and BTAY maps were 155.8 and 28.8 cM respectively, while the sex-averaged comprehensive map of the PAR was 25.8 cM. The average distance between loci for BTAX was 1.73 cM.