Using the data for the 2 charts to answer the question below: 2. Was there an in
ID: 262703 • Letter: U
Question
Using the data for the 2 charts to answer the question below:
2. Was there an instance where there were more students wiht the dominant phenotype but at the same time there were more recessive alleles in the population (q was larger than p) ? Explain how this is possible.
Thank you
# of Students
# of students
Can roll tongue
9
Can't roll tongue
1
free earlobe
7
attached earlob
3
straingt thumb
8
hitchhiker's thumb
2
widow's peak
0
no widow's peak
10
finger hair
1
no finger hair
9
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# of Students
# of students
Can roll tongue
9
Can't roll tongue
1
free earlobe
7
attached earlob
3
straingt thumb
8
hitchhiker's thumb
2
widow's peak
0
no widow's peak
10
finger hair
1
no finger hair
9
Explanation / Answer
According to the Hardy-Weinberg equilibrium, in population not affected by any external evolutionary forces and undergoing random mating with segregation of alleles, the frequency of the alleles remain unchanged. Thus, the tabulated data in the information suggests that initially the population of individuals with dominant characters was high but now the frequency of recessive alleles is high. This can be possible only if a single or more than one rules of the Hardy-Weinberg principles have been broken. Under these conditions, it seems that the rule of random mating has been violated since humans tend to not follow any restrictions while choosing their reproductive mates and this might have slowly established the recessive alleles in the population, hence the change observed.
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