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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 structure does the sheath replace in a dicot?
Explain Antigens ? A blood type, or group, is based upon the presence or absence of certain substances called antigens on the surface of the red blood cells. Antigens are subs
Explain the types of care of teeths a) Plastic/ Nylon Scalers: These are available in a variety of shapes and are moderately effective in calculus removal. Can be Ultrasonic
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How would consuming fewer than 1,200 kcalories per day impact metabolism.
Craninal nerves: Cranial nerves take their origin from different areas of brain Some of them are sensory, some are motor and a few are mixed nerves. There are 12 pair
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