DNA is not passed down from male to male and female to female. Any offspring get about half their DNA from each parent.
If there are any DNA markers that influence intelligence or personality (including creativity), You'd get them from both your parents. And if you can breed intelligent workforce-women, you can then by that same logic "breed" (select for) smart men.
The Androcratie would likely stifle creativity, but mostly because it is a repressive regime (it might be offset by the promotion of creative ways to use females for males, or ways to stay alive for females, but these are narrow parameter for creativity to flourish).
Anyway, the reduction of creativity would be mainly due to societal censorship, not DNA "degeneration" in my opinion, especially given the track record of eugenics in that area.
But as a big-brain enjoyer, I'd agree that if you are gonna do Eugenics (and if it worked like cattle-breeding, even for intelligence), you should bred your sex-toys/breeding stock to be submissive but smart

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Except enthusiastic bimbos are great too, no bimbos would be a tragic loss... And also some dominant alpha females to help manage the others... I guess you can't beat diversity, which is why Eugenics doesn't work in a complex society (but it still makes for nice fictional women subspecies in some demented kinky world).
Also, IQ tests are not foolproof at measuring intelligence. What they measure is how similarly you think to an IQ test manufacturer, or how well you were train to answer "IQ test-like" riddles.