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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
Primary amines can act as bases; they can- Select one: a. Absorb a proton to become R-NH2+2 b. Release a proton to become R-NH2+ c. Absorb a proton to become R-NH3+
How Physical Activity affect requirement of protein? Research on protein needs for muscular work had its beginning in 1863 when Von Leiberg postulated that muscle protein was d
Q. What is signifying when it is said that beings of the phylum Annelida are vascular beings? From which other phyla of the animal kingdom does this feature differentiate them?
What are the kinds of plant geotropisms? Why do the root and the stem present opposite geotropisms? The kinds of geotropisms are the positive geotropism, that in which the plan
It is a neural mechanism that plays a role in encoding of new information. Encoding takes place as a result of changes in the strength of synapses among neurons in neuronal network
Which are the germ layers present in cnidarians? Which tissues of the animal do they originate? These beings there ectoderm and endoderm, two germ layers. Animals with only two
What do you understand by the terms retrogradation and gelatinization? The realignment of the amylose and amylopectin and swollen starch granules to form a pocket is termed
Gene targeting in ES cells: In some of the livestock species pro-nuclear injection cannot be used to modify the animals' own genes due to various reasons especially non availabil
When the work sheet is finished all the essential information to prepare the statement of retained earnings, income statement and balance sheet is readily available. Currently you
True cyst: cyst that is completely lined by epithelial tissues.All the lesions are far away without communication with endodontic access or endodontic cavity or periapical
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