Reproduction is one of the vital processes that ensure the production of new organisms believes in the continuation of the living species. Reproduce one of the key traits that are associated with life every living organism must reproduce one way or the other. Known methods of reproduction is sexual and asexual reproduction.
In asexual reproduction: can a single organism without the intervention of any other organism that the division to give new organisms. Bacteria, for example, is divided into two cells daughters as an example of asexual reproduction. Exclusively asexual reproduction in single-celled organisms, while most plants retain the ability to asexual reproduction.
In sexual reproduction: The operation requires the participation of Mtedeitin one of each sex, where individuals characterized by lots of plants and most of the higher animals to males and females, males produce male germ cells are the sperm (Sperms) produces female female gametes are eggs (Ova). In such case, these objects are distinct from each other as the external appearance and internal genital installation of its members. The process of sexual reproduction to take place Nwati sperm and egg fertilization process called (Fertilisation) The result is a mixed genetic material Vetoart sons recipes combine the parents.
Formation of sperm (sperm)
English (Spermatogenesis) consists sperm in the testis (Testis) which is comprised of large numbers of tubules sperm (Seminiferous Tubules) crooked. This tubule cells lining the bacterial preliminary divided divisions indirect and multiple successive and produce new sperm cells called Slevat (Spermatogonia) which are bilateral chromosomal Group (2 x). Slevat sperm divided divisions unusual result in a doubling in the numbers, pass Slevat sperm growth phase after the divisions stopped and grow in size and called the initial Alntvih cells (primary spermatocytes). Alntvih pass the initial stage of cell division resulting in a reductionist first two cells of equal size Ahadety chromosomal group (Q) and called each cell Alntvih secondary (Secondary spermatocyte). Pass the two cells Alntefitten secondary schools split second phase reductionist and result in four equal cells in a single chromosomal group size (Q), called these four Boromat sperm cells (Spermatids). Suffer fragrances sperm changes in the shape and composition, leading to the formation of mature sperm (Mature Sperm).
Composition of eggs
English (Oogenesis), consisting of eggs in the ovary where they pass through germ cells within the ovary operations division indirectly result in aggregates of cells called Slevat eggs (Oogonia). Suffer Slevat eggs divisions unusual successive result in additional Slevat eggs all be bilateral chromosomal Group (2 x). Section of these cells begin to grow Vekpr size and called then the cells primary oocyte or primary (Primary Oocytes) which are bilateral chromosomal Group (2x), and these cells in many animals, particularly vertebrates which is surrounded by a small-sized cells called Alihusalih cells (Follicle Cells) . The initial egg cell with Alihusalih cells surrounding what is known as ovarian Balhouselh. Pass the initial egg cell meiosis stage the first division, which produces about Khalitan unequal size because of the unequal division Alsaitoblazmi and the two cells are both single chromosomal group (Q). Called large cell size cell ovale secondary (Secondary Oocyte), while small-sized cell called a polar body first. Undergoing oocyte secondary stage of meiosis II division that produces about Khalitan is equal in size as well, large called Arumah egg, which grow to be a mature egg, and small cell represents the polar second body, both mono chromosomal group (Q), was first polar body is divided It shall be two objects polar others, where the final result of this process is a mature egg with three polar bodies and dissolve the polar bodies later.
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