It is a small haploid cell that is formed concomitantly as an egg cell during ogenesis, but which generally does not have the ability to be fertilized.
A polar body is a small haploid cell that is formed concomitantly as an egg cell during oogenesis, but which generally does not have the ability to be fertilized. When certain diploid cells in animals undergo cytokinesis after meiosis to produce egg cells, they sometimes divide unevenly. Therefore, the formation of the first polar body is an especially important factor in forming a healthy zygote. However, chromosomally abnormal polar bodies are not guaranteed to induce the development of an abnormal zygote. These 10 animal facts will amaze you. A polar body, sometimes referred to as a polar cell, is a cell found within the ovum of mammals as well as plants. It is the byproduct of the natural process of cell division during oogenesis and meiosis. When the ovum is fertilized by the plant's male gamete, the polar bodies also are fertilized by a second male cell. They then develop not into a plant but into endosperm, a cell structure that functions to produce nutrients for the growing plant cell. polar body. noun. : a cell that separates from an oocyte during meiosis: a: one containing a nucleus produced in the first meiotic division—called also first polar body b: one containing a nucleus produced in the second meiotic division—called also second polar body. Definition of POLAR BODY. : a cell that separates from an oocyte during meiosis and that contains a nucleus produced in the first or second meiotic division and very little cytoplasm. See polar body defined for kids. ADVERTISEMENT. noun. The first polar body frequently divides while the second is being formed, and as a final result four cells are produced, viz., the mature ovum and three polar bodies, each of which contains two chromosomes, i.e., one-half the number present in the nuclei of the somatic cells of members of the same species.  Noun. 1. polar body-a small cell containing little cytoplasm that is produced along with the oocyte and later discarded. cell - (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals. 1  Facebook. A polar body refers to a cell that is found within the ovum of mammals and plants. When the ovum is fertilized by the plant's male gamete, the polar bodies also are fertilized by a second male cell. They then develop not into a plant but into endosperm, a cell structure that functions to produce nutrients for the growing plant cell. Polar body twinning is a hypothesized form of twinning in meiosis, where one or more polar bodies do not disintegrate and are fertilized by sperm. Twinning would occur, in principle, if the egg cell and a polar body were both fertilized by separate sperms. Therefore, the formation of the first polar body is an especially important factor in forming a healthy zygote. However, chromosomally abnormal polar bodies are not guaranteed to induce the development of an abnormal zygote.
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What is contained within the polar body?