Jan 16, 2018

A genomic region containing REC8 and RNF212B is associated with individual recombination rate variation in a wild population of red deer (Cervus elaphus)

BioRxiv : the Preprint Server for Biology
Susan E JohnstonJosephine M Pemberton


Recombination is a fundamental feature of sexual reproduction, ensuring proper disjunction, preventing mutation accumulation and generating new allelic combinations upon which selection can act. However it is also mutagenic, and breaks up favourable allelic combinations previously built up by selection. Identifying the genetic drivers of recombination rate variation is a key step in understanding the causes and consequences of this variation, how loci associated with recombination are evolving and how they affect the potential of a population to respond to selection. However, to date, few studies have examined the genetic architecture of recombination rate variation in natural populations. Here, we use pedigree data from ~2,500 individuals genotyped at ~38,000 SNPs to investigate the genetic architecture of individual autosomal recombination rate in a wild population of red deer ( Cervus elaphus ). Female red deer exhibited a higher mean and phenotypic variance in autosomal crossover counts (ACC). Animal models fitting genomic relatedness matrices showed that ACC was heritable in females (h2 = 0.12) but not in males. A regional heritability mapping approach showed that almost all heritable variation in female ACC was explained ...Continue Reading

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Mentioned in this Paper

Overriding Toe
Genus Cervus (organism)
RNF212 gene
Recombination, Genetic
Deer (mammal)
Sexual Reproduction

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