Classic recessive-or-dominant gene dynamics may not be so simple

https://news.stanford.edu/stories/2025/09/classic-recessive-dominant-gene-dynamics-pesticide-resistance-research

by hhs • 10 months ago

35 5 10 months ago

news.stanford.edu

Environment modulates epigenetic expression so that, at times, recessive genes actually get expressed more?

EduardLev• 10 months ago

Not a biologist but I don't think it has to do with how much the genes get expressed but rather that they do get expressed and in bad times (pesticide) they're really good and look like they dominate (in that you only need one copy to get the expression/benefits) but in good times (pesticide free) they don't introduce that much negative cost and so you need two copies for adverse effects.

privatelypublic• 10 months ago

Haven't we known the middle school recessive/dominant explanation to be so incomplete as to be wrong for ages?

kjkjadksj2• 10 months ago

A beetle allele is dominant white and recessive black. It is found on white sand. This beetle ends up on a black sand beach and proliferates. Birds see the white beetle plain as day and eat them. The allele frequencies of the black recessive beetle on the black beach surge as a result to the point where it is the more frequent allele observed.

Classic recessive-or-dominant gene dynamics may not be so simple

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