How division takes twice in meiosis?

1 Answer
Mar 4, 2018

It's more specialized, so there are more steps


In mitosis, steps (simply put) are: DNA and organelles replicate, cell grows, then the cell splits down the middle and divides itself into two cells. In meiosis it's more complicated.

First, the chromosome (DNA) replicates just like in mitosis, but then, unlike mitosis, the homologous chromosomes cross over, creating two unique sets of DNA. These two sets turn into individual daughter cells. Then, each cell divides again, leaving you with four unique cells.

This process is used to reduce diploid cells (two sets of chromosomes) to haploids (one set). In females, this process is used in the ovaries to produce eggs, for example, which are haploid.