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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
what is taxonomy
Q. Explain about Anabolism? Anabolism is a process of synthesis or making of larger or complex molecules from smaller molecules. The molecules are of different kinds like hormo
Phylum Cyanobacteria Cyanobacteria are prokaryotes, but they are not like bacteria in the usual sense of the word. The cyanobacteria lack chloroplasts, and their l
what is welfare in biology
Q. Chemical Agents Available for Sterilization? Chemical Agents: these include the following: Alcohols: ethyl alcohol, isopropyl alcohol, trichlorobutanol Aldehydes: f
AMITOSIS This is direct cell division in which the genetic material is not duplicated and hence its distribution to the daughter cells is not precisely half and half,
Homologous series A homologous series can be illustrated as a group of compounds in which the several members have similar structural features and identical chemical propertie
Characteristics of Thin Gingiva Highly scalloped soft tissue and bony architecture Delicate friable soft tissue Minimal amount of attached gingiva Thin underlying
What is the Importance of biotin Biotin is involved in a number of important metabolic reactions, probably as coenzymes. Deficiency symptoms are manifest as degenerative cha
Q. What is Polypropylenes? Polypropylenes (PP) (cast PP, Bi-axially oriented PP (BOPP), pearlized PP): Polypropylene is often termed a breathable film. This film is not a
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