Thread: What happens to the number of chromosomes during the second division of cells in meiosis?

any help would be great.

and why does this happen?

they are copied and split

meiosis makes a diploid cell into 4 haploid cells

In the first division of Meiosis (Meiosis I)... homologous chromosomes are separated resulting in 2 haploid daughter cells. During the second cell division sister chromatids are pulled apart resulting in 4 haploid daughter cells with the same amount of chromosomes as the 2 daughter cells from which they came. The difference is the daughter cells from Meiosis I have chromosomes with 2 chromatids (sister chromatids) which look like an X & the chromosomes in the daughter cells from Meiosis II have single chromatids which look like an I.



*Parent cell = XXXX

Meiosis I:

Daughter Cell 1 = XX Daughter Cell 2 = XX

Meiosis II:

Daughter 1 = I I Daughter 2= I I Daughter 3= I I Daughter 4 = I I


The following video is really informative and easy to understand.


http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter3/animation__how_meiosis_works.html