Answer:
a. 0.7
b. 0.3
c. Yes
d. 90
Explanation:
As the random mating population was escaped from external evolutionary forces such as mutation, natural selection, and migration, the gene frequency will not change over time. The population will be at Hardy-Weinberg equilibrium throughout the time.
<u>As the number of sleepyheads (recessive trait) was 90 out of class of 1000 students at the start of course.</u>
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q²=0.09 ∵ fraction of sleepyheads = 90/1000 = 0.09 denoted by q²
q that is the recessive gene frequency will be equal to 0.3 (by taking square root of P²
Hence, <em>allele frequency of a allele is 0.3</em>
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As, frequency of dominant allele A is denoted by letter p and p+q=1
∴ p=0.7 As p=1-0.3
Hence,<em> allele frequency of A allele is 0.7</em>
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Counting the probability of aa alleles (sleepyheads);
As a= 0.3
∴ aa= 0.3×0.3 = 0.09 (In terms of percentage, it is 9%)
To 0.09×1000= 90 or 9% of 1000 = 90
Hence, 90 students should be sleepyheads.
