EE bonds purchased in the current period mature at twenty years and go into an automatic extension for ten years. These bonds accrue interest every month. If you bought a paper bond between May in 1997 and the end of April 2005, however, the interest rate varies according to a market based rate.
Freebase(0.00 / 0 votes)Rate this definition: Oogenesis. Oogenesis, ovogenesis or oÃ¶genesis is the creation of an ovum. It is the female form of gametogenesis; the male equivalent is spermatogenesis. It involves the development of the various stages of the immature ovum. OÃ¶genesis. Å-Å-jenâ²e-sis, n. the genesis and development of the ovumâalso OÃ¶gâ²eny.âadj.
Oogenesis is meiosis that takes place in female gonads i.e. in ovary. Oogenesis will have two meiotic divisions. Once the germ cell becomes matured and differentiated to enter meiosis, it is called a primary oocyte. The cytoplasm of the oocyte is conserved during cytokinesis, hence despite getting one half of the genetic material, the first polar body receives minimal cytoplasm after first meiotic division.