What is the polar body?

The polar body, sometimes referred to as a polar cell, is a cell found in the egg and plant eggs. It is a by -product of the natural process of cell division during oogenesis and meiosis. Oogenesis is a process by which eggs are formed, and meiosis is a division of cells at the time of ovulation when the egg is released into fallopian tubes and other division just after fertilization. In mammals, the polar body is not a functional reproductive cell and breaks down for the period, but in plants the polar body performs a separate function in the development of the resulting descendants.

During meiosis, the number of chromosomes is half divided in half to produce reproductive cells. When a female reproductive cell or egg is connected to a male reproductive cell or sperm, the correct number of chromosomes is re -obtained. The polar body is the second half of the evolving female cell, which also contains a semi -graded number of chromosomes. However, the polar body does not contain sufficient cytoplasm for functioning as a full -fledged reproductive cell because the cyt is during meiosisDistributed to the egg rival during a process called cytokinesis. In mitosis, a process that leads to two separate body cells with a complete chromosome supplement, cytokinesis evenly divides the cytoplasm.

In plants, the process of fertilization includes both egg and polar bodies. When the egg is fertilized by a male game of plants, the polar bodies are also fertilized by a second male cell. The polar bodies then do not develop in the plant, but on the endosperm, a cellular structure that works to produce nutrients for growing plant cell. Endosperm not only helps to nourish the growing plant, but also makes seeds and grains highly nutritious for the consumption of other animals, including humans.

tobeded the theory that in mammals something similar could occur if two sperm fertilize the egg and the polar body. This theoretical occurrence is called twinning of the polar body. Some scientists believe that in this proCES can be made viable twins, but others believe that the polar body with a lack of sufficient cytoplasm could not develop properly. If the twinning of the polar body could be possible, the resulting offspring would not be identical twins, as mothers would share, but theoretically would carry genetic material from two different sperm.