sperm cells moving towards an egg cell

analysis artificial baby bio biological biology biotechnology birth cell chromosome clone copulation dna egg embryo evolution fecundation female fertile fertility fertilization fertilize fetus gene genetic genetically health human illustration insemination laboratory life liquid mating medical medicine micro microscope microscopic molecular molecule motherhood offspring orgasm ovulation ovule ovum parent pregnancy pregnant procreation render reproduction research science seed semen sperm spermatodoiz spermatozoon stem technology