Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
activity anatomy beginnings biological biology biotechnology birth cell competition dna egg female fertile fertility fertilization gene genetic horizontal human life liquid love magnification male medical medicine micro microscope motherhood motion new ovulation ovule parent penetration pregnancy pregnant procreation reproduction research science seed semen sex sexual small sperm spermatozoon twins