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this post was submitted on 10 May 2024
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This looks misleading to me, because it indicates that grandchildren and their descendants can have very disproportionate amounts of genes from either grandparent.
The genes inherited from a parent do not sit in one continuous chunk, as indicated here.
Instead they are pulled randomly from all over the parent's genome, and so they end up taking up places all over the offspring's genome as well.
This has the effect that relatedness is consistently halved through the generations. (Though minor variations occur in the short term)
Also, doesn't show the effect of recessive genes and similar stuff
I am personally okay with that, as this is intended to be a simplification. A simplification by definition can't include all information. But there's a difference between omitting information and including misleading information. My problem's with the latter in this case.