Human egg and sperm, SEM

Human egg and sperm, SEM

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Credit: DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY

Caption: Photo composite of human egg (oocyte) and sperm (spermatozoon), coloured scanning electron micrograph (SEM). The human egg cell (or ovum) is the female reproductive cell (gamete) in human reproduction. The egg cell is not capable of active movement and it is much larger (visible to the naked eye) than the motile sperm cells. A spermatozoon (motile male sperm) joins an ovum (female egg) to form a zygote. A zygote is a single cell, with a complete set of chromosomes, that normally develops into an embryo. Sperm cells contribute approximately half of the nuclear genetic information to the diploid offspring (excluding mitochondrial DNA). Magnification: egg x260, sperm x560 when shortest axis printed at 25 millimetres.

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Keywords: 97990b, colored, coloured, composite, egg, egg cell, egg cells, false-colored, false-coloured, female egg cell, female egg cells, female gamete, female gametes, flagellates, haploid, haploid cell, haploid cells, haploid sperm cell, haploid sperm cells, human, human body, human egg, human egg cell, human egg cells, human reproduction, human sperm, male gamete, male gametes, male sperm, medical, montage, motile sperm cell, motile sperm cells, oocyte, oocytes, scanning electron micrograph, sem, sexual reproduction, sperm, sperm cell, sperm cells, sperm head, sperm tail, spermatozoa, spermatozoan, spermatozoon

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