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An oocyte (UK: / ˈoʊəsaɪt /, US: / ˈoʊoʊ -/), oöcyte, or ovocyte is a female gametocyte or germ cell involved in reproduction. In other words, it is an immature ovum, or egg cell. An oocyte is produced in a female fetus in the ovary during female gametogenesis. The female germ cells produce a primordial germ cell (PGC), which then ...
Germ cells produce gametes and are the only cells that can undergo meiosis as well as mitosis. Somatic cells are all the other cells that form the building blocks of the body and they only divide by mitosis. The lineage of germ cells is called the germline. Germ cell specification begins during cleavage in many animals or in the epiblast during ...
The egg cell or ovum (pl.: ova) is the female reproductive cell, or gamete, [ 1 ] in most anisogamous organisms (organisms that reproduce sexually with a larger, female gamete and a smaller, male one). The term is used when the female gamete is not capable of movement (non- motile). If the male gamete (sperm) is capable of movement, the type of ...
Contents. Germline. In biology and genetics, the germline is the population of a multicellular organism 's cells that develop into germ cells. In other words, they are the cells that form gametes (eggs and sperm), which can come together to form a zygote. They differentiate in the gonads from primordial germ cells into gametogonia, which ...
These potential renewable germ cells were identified as positive for these essential oocyte markers. [2] The discovery of these active germ cells and oogonia in the adult female could be very useful in the advancement of fertility research and treatment of infertility. [2] [8] Germ cells have been extracted, isolated and grown successfully in ...
Oogenesis is the process of the production of egg cells that takes places in the ovaries. Oogenesis (/ ˌoʊ.əˈdʒɛnɪsɪs /) or ovogenesis is the differentiation of the ovum (egg cell) into a cell competent to further develop when fertilized. [ 1 ] It is developed from the primary oocyte by maturation.
Gametocyte. Scheme showing analogies in the process of maturation of the ovum and the development of the spermatids. A gametocyte is a eukaryotic germ cell that divides by mitosis into other gametocytes or by meiosis into gametids during gametogenesis. Male gametocytes are called spermatocytes, and female gametocytes are called oocytes.
Development of the gonads. The development of the gonads is part of the prenatal development of the reproductive system and ultimately forms the testicles in males and the ovaries in females. The immature ova originate from cells from the dorsal endoderm of the yolk sac. Once they have reached the gonadal ridge they are called oogonia.