[CasualSoul]

having some trouble getting my head around meiosis ...its the number if chromosomes @ each stage thats confusing me....please see attatched...is what I'vee written @ each stage correct?

[thegodofgod]

(Original post by CasualSoul)
having some trouble getting my head around meiosis ...its the number if chromosomes @ each stage thats confusing me....please see attatched...is what I'vee written @ each stage correct?

That's correct, as you get 4 identical haploid daughter cells (gametes) in meiosis, which have half as many chromosomes as a somatic cell (a cell that is not a sex cell, a gamete).

In mitosis, however, you get 2 identical diploid daughter cells (non-gametes).

[The Illuminati]

(Original post by thegodofgod)
as you get 4 identical haploid daughter cells (gametes) in meiosis, which have half as many .

How if crossing over and independent ressortment in moth metaphase I and II has occurred. The point of meiosis is to produce gametes that are non-identical in genetic material.

[CasualSoul]

(Original post by The Illuminati)
How if crossing over and independent ressortment in moth metaphase I and II has occurred. The point of meiosis is to produce gametes that are non-identical in genetic material.

If you look at the drawing what you're left with at the end of meiosis is four gametes. 2 of these gametes have 'blue chromosomes' and two have the 'red chromosomes'. There would be variation because the either of the red gametes could fuse with either fo the blue gametes. However, genetic recombinations (and crossing over) further increases variation.