ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Sperm cell in frame with chromosomes, computer artwork. Chromosomes (the 46 blue, x-shaped structures towards the edge of the frame) contain our DNA. There are 46 chromosomes in almost every cell in the human body, except sperm and egg cells which carry only 23. Mitochondria (pink) provide power to propel the sperm cell.
Model release not required. Property release not required.