Oogenesis or rarely oögenesis is the creation of an ovum (egg cell). In mammals, oogenesis occurs in the ovarian follicle of the ovary. Oogonial transformation into oocytes (oocytogenesis) is completed either before or shortly after birth. Further development comes to a rest during prometaphase I of meiosis, known as the dictyate stage, until puberty triggers oogenesis. In ascaris, the oocyte does not even begin meiosis until the sperm touches it. Oogenesis is the process in which the primary oocyte turns to an ovum undergoing meiosis. At first there is a diploid oocyte called the primary oocyte. Meiosis I occurs in which synapsis occurs and tetrads form and crossing over as well and this becomes the secondary oocyte and the first polar body. The haploid secondary oocyte undergoes meiosis II forming an ootid and another polar body. The first polar body also undergoes meiosis II forming two more polar bodies for a total of three. All three polar bodies at the end of Meiosis II disintegrate leaving only the ootid which undergoes maturation and eventually matures into an ovum. It is interesting to note that such an important process in animal life cycles is done completely without the aid of spindle-coordinating centrosomes. Many protists produce egg cells in structures termed archegonia. Some algae and the oomycetes produce eggs in oogonia. In the brown alga Fucus, all four egg cells survive oogenesis, which is an exception to the rule that generally only one product of female meiosis survives to maturity. In plants, oogenesis occurs inside the female gametophyte via mitosis. In many plants such as bryophytes, ferns, and gymnosperms, egg cells are formed in archegonia. In flowering plants, the female gametophyte has been reduced to an eight-celled embryo sac within the ovule inside the ovary of the flower. Oogenesis occurs within the embryo sac and leads to the formation of a single egg cell per ovule.
oogenesis results in the production of
oogenesis The production and development of an egg
Oogenesis occurs in the ovaries of females.
oogenesis is the process of making an egg
Oogenesis takes place in the female gonads of most animals. The eggs are created through oogenesis in the ovaries of women.
The similarity of Spermatogenesis and Oogenesis is that the both of them is needed in producing an offspring.
Oogenesis is the creation of the egg cell called the ovum in the human species. It is unclear what "GP" stands for in reference to oogenesis without having more information.
oogenesis is the development and maturation of the ovum, a process which occurs within the female reproductive system.
Spermatiogenesis is the process of producing sperm and oogenesis is the process of producing egg cells.fertilization
The final product in oogenesis is one egg and three polar bodies.
Gametogenesis is the production of sex cells. Oogenesis, a type of gametogenesis, is the production of egg cells.
Oogenesis (misspelled as oogenesis) is the creation of an egg cell. The benefit of uneven production of gametes in oogenesis is one haploid cell gets the majority of the nutrients.
its your face
Since oogenesis is the development of an ovum (egg), it takes place in the ovaries.
Oogenesis and spermatogenesis differ in how many cells are formed. Oogenesis forms 4 eggs but only 1 is viable, while spermatogenesis forms 4 viable sperm cells.
Chr. P. Raven has written: 'Oogenesis' -- subject(s): Oogenesis, Cytogenetics 'Oogenesis: the storage of developmental information' -- subject(s): Oogenesis, Cytogenetics 'Cytological and cytochemical investigations on the development of Sabellaria alveolata L' -- subject(s): Sabellariidae, Embryology, Worms
Oogenesis or rarely oögenesis is the creation of an ovum (egg cell). It is the female process of gametogenesis.
Oogenesis is the process by which the female gamete cells are produced: these 'egg' cells are known as oocytes.