ATAR Notes: Forum
Uni Stuff => Universities - Victoria => University of Melbourne => Topic started by: zibb3r on August 17, 2014, 01:22:35 am
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This week's assignment (#2); is it just me, or is it really weird????
Are the difference equations for f^a(n+1) and f^A(n+1) reversed??? How do you do it?
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This week's assignment (#2); is it just me, or is it really weird????
Are the difference equations for f^a(n+1) and f^A(n+1) reversed??? How do you do it?
What do you mean by 'reversed'? If you mean f^a(n+1) = 1- f^A(n+1), then yes you are correct.
How to do it --> calculate allele frequency of fa(n+1) from genotype frequency of faa(n+1) = p^2 according to hardy-weinburg
To get faa(n+1), refer back to the irreversible mutation lecture slides from week 2 (or wk 3, can't remember) that has the answer on it.
You should find that fa(n+1) = p after solving the difference equation. :)
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What do you mean by 'reversed'? If you mean f^a(n+1) = 1- f^A(n+1), then yes you are correct.
How to do it --> calculate allele frequency of fa(n+1) from genotype frequency of faa(n+1) = p^2 according to hardy-weinburg
To get faa(n+1), refer back to the irreversible mutation lecture slides from week 2 (or wk 3, can't remember) that has the answer on it.
You should find that fa(n+1) = p after solving the difference equation. :)
Thanks Starfish! Because it is a recessive gene mutating to a dominant gene (a --> A) wont fa(n+1)=(1-u)fa(n) and fA(n+1)=(1-u)fA(n)+u????
Which is essentially the opposite of what is said in the lectures? Because in the lectures they used a dominant gene mutating to a recessive gene (A --> a)?
Thanks :) :) :)
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Thanks Starfish! Because it is a recessive gene mutating to a dominant gene (a --> A) wont fa(n+1)=(1-u)fa(n) and fA(n+1)=(1-u)fA(n)+u????
Which is essentially the opposite of what is said in the lectures? Because in the lectures they used a dominant gene mutating to a recessive gene (A --> a)?
Thanks :) :) :)
yup that's completely correct!
Oh yes, I acknowledge that was the reverse. But the idea was the same - you just had to switch around the alleles being mutated & realise that this is an irreversible mutation (instead of reversible). Let's face it though, we were pretty much copying the lecture slide in answering this question :P
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yup that's completely correct!
Oh yes, I acknowledge that was the reverse. But the idea was the same - you just had to switch around the alleles being mutated & realise that this is an irreversible mutation (instead of reversible). Let's face it though, we were pretty much copying the lecture slide in answering this question :P
Thanks so much :D Can I ask what you wrote about 1C? It seems like such a broad question?!
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Thanks so much :D Can I ask what you wrote about 1C? It seems like such a broad question?!
Answer to this is also in the lecture notes. Do you remember when Anthony talked about how HW only applies to a single randomly mating population? He used the countries in the table to explain this..look it up :)