Question

Do first polar body undergoes meiosis 2 or not in humans?

Answer 1

Polar bodies are as diverse as the organisms that produce them. Although in many animals these cells often die following meiotic maturation of the oocyte, in other organisms they are an essential and diverse part of embryonic development. Here we highlight some of this diversity and summarize the evolutionary basis for their utility.Keywords:polar body, scale insect, parasitic wasps, endosperm, polyembryonic developmentA polar body is the byproduct of an oocyte meiotic division. It is the small cell that normally apoptoses, and in textbook figures, it usually just disappears. This portrayal though doesnot do the cell justice.Polar bodies typically form by asymmetric cytokinesis: cytosol and organelles are shunted into the secondary oocyte during meiosis I, andthen into the egg in meiosis II [Fig. 1]. This leaves the ovum’s sister and aunt (or cousins, if the first polar body also undergoes meiosis II) with relatively little cytoplasm and so in most organisms, these polar bodies simply degenerate. The polar body of human oocytes, for example, apoptoses in 17–24 hours following formation and the resulting fragments remain entrapped within the zona pellucida (Longo, 1997). Polar bodies were first reported in 1824 by Carus in gastropods, but their role was not clarified until the work of Butschli in 1875, Giard in 1876, and finally Hertwigin 1877 (seeKorschelt and Heider, 1902). These structures were often confused with egg fragments or expelled yolk masses, but were eventually referred to as directional bodies (orRichtungskorper), a term implying the place where the maturation divisions start. The common names "polocytes" and "polarbodies" derive from their polar position in the eggs.

Answer 2

No polar body don't undergo meiosis but they are a produxt of meiosis that help to retain haploidy of gametes