Fertilisation. Illustration of a sperm cell fertilising an egg cell (ovum). Within the egg cell are mitochondria (ovals), which provide the cell with energy, and the nucleus (red), which contains the chromosomes (small x-shapes). | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Harris, Roger |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |