Inbreeding (chr_Inbreeding)
This indicator quantifies the deviation relative to Hardy–Weinberg expectations (HWE)—that is, absent other evolutionary forces, non-zero Fis is suggestive of non-random mating between individuals based on their genotype. Because same-genotype individuals are likely to be genetically related, positive Fis values are suggestive of inbreeding (mating among relatives), which can lead to inbreeding depression and compromise population viability. Conversely, negative Fis values are suggestive of preferential mating among non-relatives, which may arise from pre-mating (barriers to self-pollination) or post-mating (low viability of selfed progeny) processes. This population-level statistics thus reflects the mean level of individual adult inbreeding plus other processes that can reduce (or increase) realised (”observed”) heterozygosity. Inbreeding is a critical metric in managing small or isolated populations.
Probability of two alleles in an individual being identical by descent
Type: float | Range: -
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