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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
How do keep respiratory system healthy? The circulatory system supplies food and oxygen to the body's cell. It carries away waste production of energy. The wastes must then be
Agar Agar is a polysaccharide found in the cell walls of some red algae and is unusual in containing sulfated galactose monomers. Certain marine algae of the class Rhodophyceae
Gum Tragacanth Gum tragacanth, the exudation of Astragalus species, is defined as the "dried gummy exudate" obtained from Astragalus gummifer Labillardiere. Gum tragacanth is
how is sex determinedin man.
Determine the architecture of cell There are over 200 types of cells in the human body, which are assembled into a variety of tissues, such as, the epithelia, connective tissue
Explain about the Integumentary Tissues? The skin, hair and nails covering and protecting the body are the intengumentary tissues. Depigmentation of hair and wrinkling of skin
what is the symmetry of fungi?
Ulcerative enteritis (quail disease) Ulcerative enteritis, caused by Clostridium colinum, is found in chicken, quails, pheasants, turkeys and some other birds. Clostridial or
BIOLOGY IN ANCIENT INDIA - L A T E STONE AGE [10,000 - 20, 000 B.C) Man first cultivated wheat, barley, lentils & peas. In India rice was first cultivated at Meherga
Epithelial cells of the kidney proximal tubule ? A. The sodium-glucose co-transporter in the luminal membrane is responsible for the net flux of glucose from luminal space to
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