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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
Q. What are the major significant organic molecules for living beings? Ans. There are many types of organic molecules that are important for the living beings. Particularl
What is the concept of Lophophore? A unique double ring of hollow ciliated tentacles that surround the oral opening in some animal phyla. There is some debate as to whether the
Improper Prosthetic Designing is also a cause of failure and it reiterates the importance of planning the case with the end in mind. The choice between fixed or removable prost
entamoeba histolyca and Giardia lambia were isolated
Q. What are the endocrine functions of the placenta? The placenta has endocrine function since it secretes the hormones estrogen and progesterone that maintain the endometrium
Q. What are the Signs of cardiac tamponade? The clinical presentation will be that of a low output state with anxiety, restlessness, dyspnoea, sweating, cold extremities and dr
How can the blood coagulation (clotting) process be described? Blood clotting encompasses a sequence of chemical reactions whose respective products are enzymes that catalyze t
GRAFFIAN FOLLICLE - It appears as knob or stigma in medulla. It is round, discovered by Graff. It is covered by 2 layers - thecae externa & theca interna. From theca i
Temperature - Aquatic Habitats The water temperature changes less rapidly than the temperature of air because water has a considerably higher specific heat than air, that is l
Q. What is diabetes mellitus? Diabetes mellitus is the disease caused by action or deficient production of insulin and the consequent high blood glucose level and low glucose u
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