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Because mitosis creates duplicates of cells with complete copies of the chromosomes in each cell made. For eggs and sperm cells the cell division process has to end up with the eggs and sperm having just 1/2 of the chromosome numbers in each cell made. Eggs and sperm are therefore produced by 'meiosis' and not 'mitosis'.
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∙ 16y ago
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There are some cells that can not go through Mitosis In other words an organism can not make any new ones when the cells die Human nerve and muscle cells are examples?
cardiac muscle cells are one example of cells that cant undergo mitosis because they can't stop they're current action (for obvious reasons) so they can never start replication
Why does crossing-over not occur in mitosis?
well from what i understand mitosis is just the replication of a cell, a cell divides into two cells and it is not being effected by any other cell so crossing over cant occur Crossing over occurs in meiosis to create diversity in the genetic material so the offspring is neither identical to father or mother. in mitosis it does not occur because the parent cell is making an identical copy of itself, so the DNA does not need to vary.
Can you breed animals using their DNA?
no and yes. you cant breed animals simply from dna collected from a saliva or hair sample. how ever and ovum (egg cell) and sperm cell without dna would not have a reaction. you need two sex cells from animals of opposite genders if the same species and the cells have to have undergone mitosis (you cant merely put dna from any part of the body into these cells and expect anything to work they need to go through a process which involves reconfiguration of the individuals dna chromosomes for the cells to be viable)
Why cant sex cells form by mitosis?
if I'm not mistaken I'm pretty sure its that sperm cells and the egg. (gamete's)each have around 23 chromosomes each. and a skin cell already has 46 chromosomes.so mitosis wouldn't be able to happen.well at least that's what i think.
Pregnant with toys?
no you cant because the sperm from a boy has to touch your vigina and a toy cant give sperm.8==>
Why cant female cats have babies without a boy cat?
Because that's how sexual reproduction works. Both egg and sperm are needed to create offspring.
Can a girl get pregnant from sperm on thigh?
No, a girl cant get pregnant from sperm on thigh........
Why cant men make babies?
Okay, The Reason Is... - Men Don't have The Egg Cell ( Women Only Have Egg Cells ) Note: Some Men Were Born Or Placed With Egg Cells and Sperm Cells At the Same Time That's How Some Men Get Pregnant....
Is 1.2 million per ml sperm count can father a child?
Yes ! Remember - it only takes a single sperm,meeting an egg to create an embryo !
If you are gay can sperm in your body give you worms?
you cant get worms from sperm.....gay or straight
Can Adam release sperm?
no, he cant and never will
What is wrong if you cant bust a nut?
because your body has not produced sperm cells
