The correct answer is E)52
When there is Hardy-Weinberg equilibrium like in this case of a single locus with two alleles denoted A and a with frequencies f(A) = p and f(a) = q, the expected genotype frequencies under random mating are f(AA) = p² for the AA homozygotes, f(aa) = q² for the aa homozygotes, and f(Aa) = 2pq for the heterozygotes. Let's put that A is dominant and a is recessive allele. In Hardy-Weinberg equilibrium we have:
p²+2*p*q+q²= 1 p+q=1 p=1-q
f(a) =0.4=q q²=0.4²=0.16=16%
p= 1-0.4=0.6 p²=0.6²=0.36=36%
Percentage of a homozygous genotype in the population is 16%+36%=52%
Answer:
Moderate intellectual disability
Explanation:
Ron works as a custodian's helper at a school, under the supervision of the custodian. Ron can read and write his name and can read first-grade books. He moves slowly and sometimes with difficulty.
Ron most likely suffers from a moderate intellectual disability.
Such type of people can communicate in basic and simple ways. They may have physical signs of impairment.
Approximately 10% of people with intellectual disabilities fall into this category.
Epithelial, muscle, connective, nerve and blood.
