This ad is for Artificial Insemination, for egg donors. And it completely annoys me whenever I see it, because it’s wrong, all wrong. Not because the idea is wrong, but the maths is.
(if you haven’t studied basic inheritance, a child gets half of its chromosomes ie genes from each parent. So a child only ever has 50% of the two biological parent’s genes. So when you use donor genetic material, replacing one part of a couple’s contribution, the child will only have 25% of their genes)