Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/12298
Title: | Frequency and Repeatability of Recombination Rates in Beef Cattle | Contributor(s): | Tier, Bruce (author) | Publication Date: | 2012 | Handle Link: | https://hdl.handle.net/1959.11/12298 | Abstract: | Research at the Cooperative Research Centre for Beef Technologies over the last 18 years has resulted in genotyping over 11000 cattle from a variety of breeds using a mixture of high and low density SNP tests. After a stringent quality assurance process, sire haplotypes were inferred from progeny genotypes and sire genotypes where available, and haplotypes determined for progeny. Numbers of recombinations in each progeny's sire gamete were calculated for each chromosome and the total for each individual. Over 250 small to medium sized half-sib families were available. Total recombinations per individual were analysed with a sire model to ascertain the repeatability of recombination rate. There were an average of 0.4 to 1.7 recombinations per chromosome, proportional to the length of the chromosome. The frequency of inheritance of a complete chromosome, without recombination, ranged from 0.2 to 0.6 and was inversely proportional to its length. The average number of recombinations per gamete was 21, with modest variation among breeds. The repeatability of recombination was estimated from a subset of the data with families of 10 (5) half-sibs as 0.25 (0.30). The low frequency of recombinations per gamete means that accurate haplotypes for progeny can be imputed from low density genotypes if the haplotypes of one parent are available. | Publication Type: | Conference Publication | Conference Details: | ICQG 4: 4th International Conference of Quantitative Genetics - Understanding Variation in Complex Traits, Edinburgh, United Kingdom, 17th - 22nd June, 2012 | Source of Publication: | 4th International Conference on Quantitative Genetics: Understanding Variation in Complex Traits Programme & Book of Abstracts, p. 135-136 | Publisher: | In Conference Ltd | Place of Publication: | online | Fields of Research (FoR) 2008: | 060412 Quantitative Genetics (incl Disease and Trait Mapping Genetics) | Fields of Research (FoR) 2020: | 310506 Gene mapping | Socio-Economic Objective (SEO) 2008: | 839999 Animal Production and Animal Primary Products not elsewhere classified 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences |
Socio-Economic Objective (SEO) 2020: | 280101 Expanding knowledge in the agricultural, food and veterinary sciences | HERDC Category Description: | E3 Extract of Scholarly Conference Publication | Publisher/associated links: | http://www.icqg4.org.uk/downloads/ICQG%20Cover+text.pdf |
---|---|
Appears in Collections: | Animal Genetics and Breeding Unit (AGBU) Conference Publication |
Files in This Item:
File | Description | Size | Format |
---|
Page view(s)
2,212
checked on Mar 3, 2024
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.