ovum
)
The structure of the female gamete, the ovum. The germinal spot is the nucleolus of the ovum.
Female gamete (sex cell) before fertilization. In mammals it is called an egg, and is produced by a special cell division called meiosis in the ovaries during the menstrual cycle. In plants, where it is also known as an egg cell or oosphere, the ovum is produced in an ovule. The ovum does not move by itself. It must be fertilized by a male gamete before it can develop further, except in cases of parthenogenesis.
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
| ?Page tools | ||
|---|---|---|
|
?Sign in  |
|---|