In most mammals. including mice and humans. meiotic recombination is determined by the meiosis specific histone methytransferase PRDM9. which binds to specific DNA sequences and trimethylates histone 3 at lysine-4 and lysine-36 at the adjacent nucleosomes. https://www.bekindtopets.com/hot-find-Synovex-One-Grass-Extended-Release-Implant-10-Dose-special-find/