Tag Archives: inbreeding depression

Inbreeding is Depressing

Sex-specific inbreeding depression: A meta-analysis (2021) Vega-Trejo et al., Ecology Letters, https://doi.org/10.1111/ele.13961

Image credit: Monica R., CC BY 2.0, Image Cropped

The Crux

One very basic rule in nature is that it is bad to produce offspring with a close relative. The loss of fitness associated with this sort of breeding is called the inbreeding depression, and it happens because inbreeding leads to a greater chance that recessive or deleterious (i.e., bad) alleles will be expressed. Though inbreeding affects both male and female offspring, it is unknown as to whether or not there is a general rule of it affecting one sex more than another. Today’s authors sought to answer that question by using one of my favorite statistical techniques: the meta-analysis (see Did You Know?).

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