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
Daughter Cell 1 = XX Daughter Cell 2 = XX
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.