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- W2336489062 endingPage "752" @default.
- W2336489062 startingPage "736" @default.
- W2336489062 abstract "The degree of inbreeding expressed within populations can profoundly shape evolutionary dynamics. The degree to which individuals inbreed is frequently assumed to evolve in response to selection, for example, resulting from inbreeding depression. Such evolutionary responses require additive genetic variance (VA) in the degree to which individuals inbreed. However, the magnitude of VA in the degree of biparental inbreeding has never been estimated. We devised a quantitative genetic model to estimate sex‐specific VA in the degree to which individuals inbreed while accounting for effects of individuals’ own coefficients of inbreeding and genetic effects stemming from immigration. We applied this model to the degree of inbreeding expressed through social pairing in free‐living song sparrows (Melospiza melodia). Estimates of VA for both sexes appreciably exceeded 0 and the cross‐sex genetic covariance was strongly positive, creating substantial total VA in the degree of inbreeding. Our analyses also revealed inbreeding depression in the degree of inbreeding, such that more inbred individuals paired with closer relatives, and immigrant effects, such that individuals with greater genomic contributions from immigrants paired with more distant relatives. We thereby demonstrate that the degree of biparental inbreeding can show substantial VA in nature and might consequently evolve in response to selection." @default.
- W2336489062 created "2016-06-24" @default.
- W2336489062 creator A5029567322 @default.
- W2336489062 creator A5045393851 @default.
- W2336489062 date "2016-06-01" @default.
- W2336489062 modified "2023-09-27" @default.
- W2336489062 title "Is Pairing with a Relative Heritable? Estimating Female and Male Genetic Contributions to the Degree of Biparental Inbreeding in Song Sparrows (Melospiza melodia)" @default.
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