Explain Telegony to me /sci/

No.12090526 ViewReplyOriginalReport
My wife had a black looking baby, I thought she cheated on me but the paternity test came back as mine so now I have to pay child support.

Neither of us have any black ancestors but my wife's EX was black.

I am so confused and angry at science. Why did I have to learn about this from Nazis on /pol/, who keeps this knowledge from being taught in school?