sperm, the spermatozoon ovulates into the egg.

sperm illustration biology science reproduction conception vitro fertilization motility fertility spermogram egg ovulates morphology spermatozoon medicine human genetic pregnancy health male insemination procreation sex generative spermatozoa competition medical life birth ovule swim fertilize ovulation background ovum research design semen evolution female pregnant microscopic color image dna fertile symbol art product cell icon into render egg generative