How does one figure out which Does are the "BAD" genetic deer?

I've been told by some High fence guys that the Does contribute up to 60-70% of the genetics.

I posted pics before of a 5 point that was 4.5 yrs old and that was all he ever had till he died.
Before he was injured with a dart, at 3.5 yrs. old he was a 140" 10 point. Did his genetics change too?

Here's his pic



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