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    Explain the role of meiosis in the production of gametes and genetic variation through recombination of alleles and genes including independent assortment and crossing over (details of the stages of meiosis are not required).

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    (Original post by aoas)
    Explain the role of meiosis in the production of gametes and genetic variation through recombination of alleles and genes including independent assortment and crossing over (details of the stages of meiosis are not required).

    Thank you
    The role of meiosis is to produce gametes with genetic variation. In meiosis, specifically independent assortment and crossing over increase genetic variation. Genetic variation ensures the genetic fitness of a species because obviously it gives more variety. If all organisms of a species were all the same, they run the risk of all being completely wiped out by a disease that they are vulnerable to. Also with genetic variation, there is less chance of genetically inheritable diseases being passed on. That is why for example it is very good that incest is socially unacceptable in our society. If a certain genetic disorder runs in your family and you have kids with a family member, the chances of the child also having the disorder is huge. But, by having children with a different person, there is more genetic variety and the chances of inheriting the disease are much much lower. Overall, the genetic variety creates a great array of characteristics of organisms of a species with a great combination of characteristics giving the species an overall advantage because as a whole, the species can then adapt/survive many different situations, environments, and changes that it may have to deal with, and therefore survive as long as possible.

    Hope that helps!
 
 
 
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