The cells, produced by ovaries, that eventually become an ovum (“egg cell”) via meiosis.
An ovum in an immature stage of development.
A cell which forms from an oogonium and becomes an ovum by meiosis.
A human egg; also called a female gametocyte or ovocyte. An oocyte carries the female half of the chromosomes that, when united with the complementary chromosomes from a sperm, form a zygote.
A cell in the ovary that undergoes meiosis to form an ovum. Primary oocytes develop from oogonia in the fetal ovary as they enter the early stages of meiosis. Only a fraction of the primary oocytes survive until puberty, and even fewer will be ovulated. At ovulation the first meiotic division is completed and a secondary oocyte and a polar body are formed. Fertilization stimulates the completion of the second meiotic division, which produces a second polar body and an ovum.
An immature ovum. When the cell undergoes meiosis in the ovary it becomes an ovum and is ready for fertilization by the spermatozoa. Only a small number of the many odcytes produced survive until puberty, and not all of these will become ova and be ejected into the fallopian tubes.
The stage in the development of an egg cell between the oogonium and the ovum.
A cell located in the ovary undergoes meiosis, a type of cell division, to form ova, also known as egg cells.