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Oogenesis
Oogenesis is the formation of ovum from oogonial cells that are formed in the ovary from primordial germ cells. And as in spermatogenesis it involves meiosis to produce haploid ovum. You have learnt in the section on spermatogenesis that the differentiation of sperm occurs after the meiotic events. In oogenesis the process of first meiotic division is very prolonged; and it is during this process that growth and differentiation of oocyte take place. In many animals most events related to oocyte differentiation occur during prophase I of first meiotic division. In animals which produce yolk-laden eggs, this phase is divided into
Some ecosystems possess relatively large number of species as compared to others. This is particularly true of tropical forests which exhibit a very rich-biodiversity. For example,
Syngamy and Triple Fusion After traversing through the stylar region, the ultimate destination of the pollen tube is to reach the female gametophyte and release the male game
what is animals respiration explain
Surgical Management: Surgical management consists of primary repair which involves end to end anastomosis with excision of the fistula and delayed and staged surgery. When t
State about the Halsted Reitan battery The Halsted Reitan battery, as the procedure came to be known over the years, also has a history. It has been described as a fixed batter
Apomixis The formation of sporophyte from the gametophyte without sexual process signifies apomixis. It relates to the replacement of alternation of a reduced gametophyte and
Analytic Characters - Nature and Structure of Community As you know a community has its own characteristics. Which are not shown by its individual component species. These cha
Q. From which germ layer do blood cells originate? What are other organs and tissues made from that germ layer? Blood cells have a mesodermal embryonic origin and other organs
Adverse Effects of Imiquimod Application site reactions (irritation, pruritus, flaking, erosion) are generally mild to moderate in intensity and resolve within 2 weeks of cessa
Explain about the Demand curve or schedule in short. The demand curve or demand schedule shows the total quantity purchased through all buyers, within aggregate, into the marke
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