person only inherited about 25% of said grandmother's genes
I was wondering - is the 25% of grandmother's genes an exact number or is it a rough approximation for the whole gene?
Is it physically possible but statistically unlikely that a person could get 50% of genes from maternal grandmother, 30% from paternal grandfather, 15% from maternal grandfather, and 5% from paternal grandmother?
I would assume that the statistics depend on which and how many genes are compared. The more comparisons, the closer to 25% each.
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