Can you help me with HardyWeinberg Problems?
Moderators: Leonid, amiradm, BioTeam

 Garter
 Posts: 1
 Joined: Tue Nov 09, 2010 4:31 pm
Can you help me with HardyWeinberg Problems?
I want more general help than with a specific problem. I don't really understand how to do HW problems when they give you phenotype.
For example: if it tells me that 360 out of 1,000 in a population display the recessive phenotype, how would I find the numbers of individuals expected to be homozygous dominant and heterozygous for the trait?
I tried making the 360 => .36 in the P+Q=1 equation, but then I don't know how to find the 2PG (for the hets) because the numbers will no longer add up to 1 in the p^2+2pq+q^2 equation. Is .36 really the q^2? And then I have to find normal q by square rooting? Or am I on entirely the wrong track?
Also: if they tell me that 510 out of 1,000 show the dominant phenotype, how do I find the numbers of individuals for each genotype?
Please help tell me HOW to do these problems and not what the answers are...thank you!
For example: if it tells me that 360 out of 1,000 in a population display the recessive phenotype, how would I find the numbers of individuals expected to be homozygous dominant and heterozygous for the trait?
I tried making the 360 => .36 in the P+Q=1 equation, but then I don't know how to find the 2PG (for the hets) because the numbers will no longer add up to 1 in the p^2+2pq+q^2 equation. Is .36 really the q^2? And then I have to find normal q by square rooting? Or am I on entirely the wrong track?
Also: if they tell me that 510 out of 1,000 show the dominant phenotype, how do I find the numbers of individuals for each genotype?
Please help tell me HOW to do these problems and not what the answers are...thank you!
Who is online
Users browsing this forum: No registered users and 4 guests