Consume Product

Well not really. The genetics in the ova (DNA damage and repair aside) are fixed. There are, however, epigenetic factors that can come into play - that is, which genes are/aren't expressed can change (which parts of the genetic code are read and turned into observable traits). The baby does leave behind its own residual DNA in the mother (because of placental exchange), and that could affect how future babies' genetics are expressed, but the starting genetic code in the egg is the same from birth.

That looks to be what your sources are saying too, with some discussion of residual sperm DNA in the uterus also affecting expression. The genetic code could ultimately be affected too, if genes are downregulated enough as to never be expressed, they may not get replicated or passed on. Which is functionally the same as a DNA change (and thus a niggerfied lineage), just different in the particulars.

But ova don't undergo mitosis and thus don't have a good opportunity to accidentally incorporate free DNA into their genomes. They're made in fetal development, they undergo meiosis (split into two half-genome daughter cells) at sexual maturity, which *may* be a chance for external DNA to be incorporated, but by the time the cell divides, the new chromosomes are already wrapped up so it's unlikely foreign DNA would be incorporated.

In any case I don't think this is a "jews lied" situation - just a "we're never as smart as we think we are or know as much as we think we do" situation.