hardyweinberg HELP
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hardyweinberg HELP
Hello,
I am having trouble understanding how to use the hardyweinberg equilibrium equation.
I understand that the allelic frequencies must always add to 100% (i.e. p+q = 1) but I don't understand how to do a few questions.
If AA = 0.50, Aa = 0.25 and aa = 0.25, what are p and q? Is this population in equilibrium? The answer key says that p = 0.625 and q = 0.375. How is this?
I am working through this worksheet: (in particular #3)
http://life.bio.sunysb.edu/bio350/Answerkey.htm
I am having trouble understanding how to use the hardyweinberg equilibrium equation.
I understand that the allelic frequencies must always add to 100% (i.e. p+q = 1) but I don't understand how to do a few questions.
If AA = 0.50, Aa = 0.25 and aa = 0.25, what are p and q? Is this population in equilibrium? The answer key says that p = 0.625 and q = 0.375. How is this?
I am working through this worksheet: (in particular #3)
http://life.bio.sunysb.edu/bio350/Answerkey.htm

 Garter
 Posts: 4
 Joined: Thu Jun 18, 2009 10:07 am
 Location: jakarta ~ id
do you know the formula :
p^2 + 2pq + q^2 = 1
AA = p^2
2pq = Aa
aa = q^2
p is the allele for dominant one (A) while q is the allele for recessive one (a).
to know whether a population is in equilibrium state first you have to calculate for "expected" then compared it to "observed" one using chisquare test.
it's a test used to prove whether an experiment goes on well.
p^2 + 2pq + q^2 = 1
AA = p^2
2pq = Aa
aa = q^2
p is the allele for dominant one (A) while q is the allele for recessive one (a).
to know whether a population is in equilibrium state first you have to calculate for "expected" then compared it to "observed" one using chisquare test.
it's a test used to prove whether an experiment goes on well.

 Garter
 Posts: 4
 Joined: Thu Jun 18, 2009 10:07 am
 Location: jakarta ~ id
Re:
anitapangz wrote:do you know the formula :
p^2 + 2pq + q^2 = 1
AA = p^2
2pq = Aa
aa = q^2
p is the allele for dominant one (A) while q is the allele for recessive one (a).
to know whether a population is in equilibrium state first you have to calculate for "expected" then compared it to "observed" one using chisquare test.
it's a test used to prove whether an experiment goes on well.
This can be misleading, since
AA = p^2 = 0.5
Using algebra you can make the assumption that
p = root 0.5 = 0.707 which is false
Jesse
I spit in the mouth of a god, who whispers in the minds of the children
"The most incomprehensible thing about the universe is that it is at all comprehensible"  Albert Einstein.
I spit in the mouth of a god, who whispers in the minds of the children
"The most incomprehensible thing about the universe is that it is at all comprehensible"  Albert Einstein.
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