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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 Secondary Growth explain briefly? Secondary Growth in Stems : Young developing shoots increase in height by adding new cells, which are produced by the apical meriste
Goals of Computerization in Nursing Practice Improved Efficiency: Computers can rapidly process, store, and retrieve information, helping the nurse clinician in nursing
Explain briefly why 'greenhouse' gases lead to global warming. The greenhouse gases do not interfere with the short-wave radiation reaching the Earth from the sun but take up t
Define Advantages of Direct Microscopic Count? 1. It is easy, inexpensive and relatively quick method. 2. It gives information regarding size and morphology of microorganism
What are the nutritional components of the foods we consume? The foods that we consume are composed of varying quantities of the following nutritionally important components:
Obturator - Ovule An obturator is an outgrowth of the placenta or funicle or integument or style near the micropyle. It is presumed to guide the pollen tube to the micropyle.
State two ways in which sulphur dioxide emissions from coal-fired generating stations could be reduced. Sulphur dioxide emissions can be reduced by fitting desulphurization pl
in oogenesis only on functional egg cell is normally formed from primary oocyte. Briefly explain
Q. What are the cytoplasmic inclusions? Cytoplasmic inclusions are cytoplasmic molecular aggregates, such as organic polymers, pigments and crystals. They are not considered ce
Point mutations are often caused by substances called mutagens explain? Point mutations are often caused by substances called mutagens. Base analogs, such as 5-bromouracil, a t
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