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Cystic fibrosis (CF) is an autosomal recessive disease. In a South American country, a study was...

Cystic fibrosis (CF) is an autosomal recessive disease. In a South American country, a study was conducted to test the hypothesis that cystic fibrosis carriers were less likely to be affected and die from by tuberculosis (TB) infection. To begin the quantitative study, researchers needed to identify the number of individuals in the population that were carriers, knowing the frequency of the cystic fibrosis allele was 0.1 in the population. After their analysis, the researchers concluded that there was evidence to support their hypothesis.

1. The researchers determined ___% of the population to be cystic fibrosis carriers.
(round up and enter only a whole number with no commas, periods, or other symbols)

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