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Nums99
Joined: 12 Jan 2019
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Location: India
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Schools: Rotman '23 Desautels '23 Alberta University
05 Apr 2021, 21:21
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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Extensive studies of twins have revealed a consistently higher correlation of alcoholism between identical twins than between fraternal twins; in other words, if one twin is an alcoholic, it is more likely that his or her identical counterpart is also an alcoholic than it is that his or her fraternal counterpart is. Since identical twins inherit identical genes, while fraternal twins have only half their genes in common, the higher correlation of alcoholism between identical twins suggests that this disease is determined by genetics rather than by environment.
Which of the following, if true, would most seriously weaken the conclusion drawn above?
A ) The study in question examined a large and diverse population of both identical and fraternal twins.
B ) The correlation revealed by the study, while high, was less than had been predicted by the researchers involved.
C ) A similar study of identical and fraternal twins found no evidence of a genetic basis for schizophrenia, a mental disorder.
D ) Research has shown that environment plays a stronger role in the lives of identical twins, who tend to be treated more alike than fraternal twins.
E ) Establishing that alcoholism is genetically determined does little, if anything, to prevent people from becoming alcoholics.
Which of the following, if true, would most seriously weaken the conclusion drawn above?
A ) The study in question examined a large and diverse population of both identical and fraternal twins.
B ) The correlation revealed by the study, while high, was less than had been predicted by the researchers involved.
C ) A similar study of identical and fraternal twins found no evidence of a genetic basis for schizophrenia, a mental disorder.
D ) Research has shown that environment plays a stronger role in the lives of identical twins, who tend to be treated more alike than fraternal twins.
E ) Establishing that alcoholism is genetically determined does little, if anything, to prevent people from becoming alcoholics.
06 Apr 2021, 13:47
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D ) Research has shown that environment plays a stronger role in the lives of identical twins, who tend to be treated more alike than fraternal twins.
If option D is correct then the role of environment can't be downplayed as was done in the conclusion above. Option D being true weakens the conclusion.
If option D is correct then the role of environment can't be downplayed as was done in the conclusion above. Option D being true weakens the conclusion.
