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