avi_jmister
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Hi,

in B2 AQA I am struggling with cell division, and was wondering if anyone can explain these two topics in detail but briefly if that makes any sense
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mortal infinity
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Mitosis is cell division to create two genetically identical daughter cells. They are genetically identical to the parent cells too. 1 parent cell copies its nucleus/genetic information and splits into two daughter cells. Each have a full set of chromosomes and are diploid. This occurs in somatic (body) cells for growth & repair and asexual reproduction (plants, cloning).

Meiosis is cell division to create 4 daughter cells, each with half the genetic information/DNA. Genetically different to each other and the parent cell. 1 parent cell copies its nucleus/genetic information and splits into two daughter cells. Then the daughter cells split again, without copying the DNA. This results in 2 haploid cells with half the number of chromosomes of a somatic cell. This occurs in the sex organs (testis and ovaries) to produce sperm and eggs. The parent cell is a somatic cell.

I hope that was enough detail for you but let me know if you need something cleared up.
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avi_jmister
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(Original post by mortal infinity)
Mitosis is cell division to create two genetically identical daughter cells. They are genetically identical to the parent cells too. 1 parent cell copies its nucleus/genetic information and splits into two daughter cells. Each have a full set of chromosomes and are diploid. This occurs in somatic (body) cells for growth & repair and asexual reproduction (plants, cloning).

Meiosis is cell division to create 4 daughter cells, each with half the genetic information/DNA. Genetically different to each other and the parent cell. 1 parent cell copies its nucleus/genetic information and splits into two daughter cells. Then the daughter cells split again, without copying the DNA. This results in 2 haploid cells with half the number of chromosomes of a somatic cell. This occurs in the sex organs (testis and ovaries) to produce sperm and eggs. The parent cell is a somatic cell.

I hope that was enough detail for you but let me know if you need something cleared up.

thanks so much that really helped, just one question, what is a haploid cell?
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mortal infinity
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(Original post by avi_jmister)
thanks so much that really helped, just one question, what is a haploid cell?
Haploid = half the DNA so 23 chromosomes

Diploid = full DNA so 46 chromosomes (23 pairs)
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Stagnant94
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So you've already got a good brief from mortal infinity. So what i'll give you is an easy way to remember which is which in case you get confused.

Warning: this is extremely weird and given to me by my Biology teacher, don't judge me.

Mitosis: My toes are not for sex

so Mitosis is asexual reproduction.
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