fertilization. close-up of spermatozoa or haploid male gamete that joins with an ovum to form a zygote

fertilization fertilisation zygote ovum sperm egg closeup spermatozoa haploid male gamete genetically individuals human cell medical science fertility reproduction pregnancy nucleus health development fertile reproductive ovulation gynecology female medicine embryo diagram anatomy genetic biology stage vector embryology structure follicle oocyte woman infertility insemination spermatozoon care fusion gametes diploid ivf isometric flat realistic close-up joins form brand font text presentation line screenshot advertising document circle multimedia cartoon design poster logo organ plan learning