Meiosis

By Streeter Gehrt

Importance of Meiosis.

Very different from Asexual form of cellular divison. Mitosis,and Meiosis allows chromosome pairs with the same genes. And allows genetic diversity between cells instead of Asexual reproduction where if one disease kills one it can kill them all.

All the steps and other extra information.




Meiosis



DefinitionA type of cellular reproduction in which the number of chromosomes are reduced by half through the separation of homologous chromosomes, producing two haploid cells.

FunctionGenetic diversity through sexual reproduction.

Type of ReproductionSexual

Occurs inHumans, animals, plants, fungi.

GeneticallyDifferent

Crossing OverYes, mixing of chromosomes can occur.

Pairing of HomologsYes

Number of Divisions2

Number of Daughter Cells 4 Daughter cells

Chromosome NumberReduced by half.

Steps(Meiosis 1) Prophase I, Metaphase I, Anaphase I, Telophase I; (Meiosis 2) Prophase II, Metaphase II, Anaphase II and Telophase II.





Mitosis



A process of asexual reproduction in which the cell divides in two producing a copy, with the same number of chromosomes in each resulting diploid cell.


Function: Cellular reproduction


Type of reproduction: Asexual


Occurs in: All organisms


Genetically: Identical


Crossing over: No, Crossing over does not occur during any replication


Numer of divisions: 1


Number of daughter cells: 2 daughter cells


Chromosome number: remains the same


Steps: Prophase, Metaphase, Anaphase, Telophase.


Discovered by: Walther flemming

Phases of Meiosis