FIXATION FOR SOME. “Viral infection of germ line cells (i.e. gametes, or cells of the early embryo) can lead to viral genes or genomes becoming integrated into chromosomes and inherited as host alleles. These insertions, which we refer to here as endogenous viral elements (EVEs), are usually eliminated from the host gene pool within a small number of generations. However, they can also increase in frequency, and some eventually reach fixation.”
https://lnkd.in/bBjWGE5