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What is the first polar body? How different is it from the oocyte II?
In oogenesis the oogonium differentiates into oocyte I (2n) and this cell enters meiosis. After finishing the first meiotic division (meiosis I) the oocyte I form two cells: the oocyte II (n) and the first polar body. The oocyte II is bigger due to it gets almost all the cytoplasm and the cytoplasmic structures of the oocyte I as a strategy for metabolite and nutrient storage. The oocyte II cell goes then to the second meiotic division. The first polar body is very lesser and almost lacks cytoplasm; it disintegrates or stays attached to the oocyte II.
Triple Fusion The fusion process between the other male gamete and the secondary nucleus follows the same pattern as syngamy. In most plants, the polar nuclei are only partial
Alimitation of five kingdom classification sk question #Minimum 100 words accepted#
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