fertilization process icon. cartoon comic . spermatozoons reaching egg, ovum cell. reproduction close-up

baby biology birth born cell chromosome competition dna egg evolution father female fertile fertility fertilization fertilize genetic health healthcare human infertile infographics isolated make male medical medicine microscope microscopic mother obstetric ovary ovulation ovule ovum penetration pregnancy process race reproduction science semen sex sexual sperm spermatozoa spermatozoon veneric virus