H - Weezy Problem
q ^2
|
(given) .41
|
q
|
.64
|
p
|
.36
|
p ^2
|
.13
|
2pq
|
(2)(.36)(.64) = .46
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p^2 + 2pq + q^2
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(.13) + (.46) + (.41) = 1
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# of homo dominant
|
q^2 = .41 = 41%
(q^2 x 1000) = (.41 x 1000) = 410
|
# of homo recessive
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p^2 = .13 = 13%
(p^2 x 1000 = (.13 x 1000) = 130
|
# of heterozygous
|
2pq = .46 = 46%
(2pq x 1000) = (.46 x 1000) = 460
|
We are given the value q^2 (homozygous dominant) of .41 and an initial population of 1000 individuals.
Step 1: Find q by taking the square root of q^2 which equals .64
Step 2: Find p by knowing q + p = 1, therefore 1 - .64 = .36
Step 3: Find p^2 by taking p and squaring it, or multiplying it by itself. .36 x .36 = .13
Step 4: Find 2pq by plugging in the values p and q. (2)(.36)(.64) = .46
After finding all values, I then found the # of homo dom. individuals, # of homo rec. individuals, and # of heterozygotes in the population.
In order to do so, I multiplied the value of q^2 (.41) ,which also equals 41% of the population, by the total population (1000) and got 410 individuals.
The number of individuals that contain the homozygous recessive alleles are 13% of the population which is 130 individuals, which is found by multiplying p^2 by the total population as well.
Lastly, the number of heterozygous individuals takes up 46% of the population which is 460 individuals. This is found by multiplying 2pq by 1000, the total population as well.