can anyone give me the answers to the hardy-weinberg problems in the ap bio lab 8 and then explain how to do them? i got the first one but none of the others are working for me!
2007-03-20 13:01:58 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Biology
1. In Drosophilia, the allele for normal length wings is dominant over the allele for vestigial wings. In a population of 1,000 individuals, 360 show the recessive phenotype. How many individuals would you expect to be homozygous dominant and heterozygous for this trait?
360 are recessive so that means they make up 36% of the population. square root that and get .6 for the frequency.
subtract that from 1 and get .4 for p.
p + q = 1 .6 + .4 =1
p2 +2pq + q2 = 1
.16 .48 .36
160 480 360 = 1000
2. The allele for the ability to roll one's tongue is dominant over the allele for the lack of this ability. In a population of 500 individuals, 25% show the recessive phenotype. How many individuals would you expect to be homozygous dominant and heterozygous for this trait?
p + q = 1 recessives = 25% square root .25 and get .5
.5 + .5 = 1
p2 + 2pq + q2 = 100
.25 + .50 + .25 = 100
125 + 250 + 125 = 500
3. The allele for the hair pattern called "widow's peak" is dominant over the allele for no "widow's peak." In a population of 1,000 individuals, 510 show the dominant phenotype. How many individuals would you expect of each of the possible three genotypes for this trait?
510 show dominant so 490 show the recessive.
the is 49% of the population. Square root .49 and get .7 as the frequency of the recessive allele.
p + q =1 .3 + .7 = 1
p2 +2pq + q2 = 1
.09 + .42 + .49 = 1
46 + 214 + 250 = 510
4. In a certain population, the dominant phenotype of a certain trait occurs 91 % of the time. What is the frequency of the dominant allele?
So 9% is recessive. Square root .09 and get 0.3 for recessive frequency. 0.7 is the answer.
2007-03-20 14:39:46 · answer #1 · answered by ATP-Man 7 · 5⤊ 2⤋
Ap Bio Lab 8
2016-10-13 11:01:31 · answer #2 · answered by Anonymous · 0⤊ 0⤋
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ap bio lab 8?
can anyone give me the answers to the hardy-weinberg problems in the ap bio lab 8 and then explain how to do them? i got the first one but none of the others are working for me!
2015-08-20 07:21:44 · answer #3 · answered by Elwanda 1 · 0⤊ 0⤋
p = dominant allele frequency q = recessive allele frequency p^2 + 2pq + q^2 = 1 p^2 + 2pq = 0.9 therefore q^2 = 0.1 q = 0.3162277 p + q = 1 p = 1 - q p = 1 - 0.3162277 p = 0.6837723 or 68.4% The frequency of the dominant allele is 68.4%
2016-03-12 20:54:15 · answer #4 · answered by ? 4 · 0⤊ 0⤋