Meiosis - Definition, Stages, Function and Purpose - Biology …
2020年6月11日 · Meiosis is the process in eukaryotic, sexually-reproducing animals that reduces the number of chromosomes in a cell before reproduction. Many organisms package these cells into gametes, such as egg and sperm.
Meiosis - Wikipedia
Meiosis occurs in eukaryotic life cycles involving sexual reproduction, consisting of the cyclical process of growth and development by mitotic cell division, production of gametes by meiosis and fertilization.
Meiosis | Definition, Process, Stages, & Diagram | Britannica
2024年10月30日 · meiosis, division of a germ cell involving two fissions of the nucleus and giving rise to four gametes, or sex cells, each possessing half the number of chromosomes of the original cell. A brief treatment of meiosis follows. For …
Meiosis Definition, Diagram, Steps, and Function - Science Notes …
2023年10月21日 · In biology, meiosis is the process where a cell replicates DNA once but divides twice, producing four cells that have half the genetic information of the original cell. It is how organisms produce gametes or sex cells, which are eggs in females and sperm in males.
Meiosis: Definition, Stages, & Purpose with Diagram - Science Facts
2023年5月16日 · Meiosis is a cell division process where a single (parent) cell divides twice to produce four independent (daughter) cells, each having half the chromosomes as the original cell. The term ‘meiosis’ came from the Greek word ‘meiosis’, meaning ‘lessening’.
What Is Meiosis? - Definition, Cell Division And Stages of Meiosis …
Meiosis is the process in which a single cell divides twice to form four haploid daughter cells. These cells are the gametes – sperms in males and egg in females. The process of meiosis is divided into 2 stages.
Meiosis - National Human Genome Research Institute
3 天之前 · Meiosis is a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes (the sex cells, or egg and sperm). In humans, body (or somatic) cells are diploid, containing two sets of chromosomes (one from each parent).
Meiosis - Molecular Biology of the Cell - NCBI Bookshelf
In meiosis, by contrast, the sister chromatids come apart in two steps—their arms have separated at anaphase I, while their centromeres remain attached, separating only at anaphase II (see Figures 20-7 and 20-11). The principles of meiosis are the same in plants and animals and in males and females.
Meiosis: Phases, Stages, Applications with Diagram - Microbe Notes
2023年8月3日 · Meiosis is a type of cell division in sexually reproducing eukaryotes, resulting in four daughter cells (gametes), each of which has half the number of chromosomes as compared to the original diploid parent cell.
Genetics, Meiosis - StatPearls - NCBI Bookshelf
2023年8月14日 · In the gametes, a different form of cell division occurs called “meiosis.” The outcome of meiosis is the creation of daughter cells, either sperm or egg cells, through reduction division which results in a haploid complement of chromosomes so that on joining with another sex cell at fertilization a new diploid chromosomal complement is ...