Which of the following was useful in the identification of the gene that causes cystic fibrosis (CF)?
A) observation of independent assortment of PON and CF
B) sequencing of the complete human genome
C) identification of another trait that is often inherited with CF
D) comparison of karyotypes of affected and unaffected individuals
E) chorionic villus sampling

Question

Quizplus · Accepted Answer

The identification of another trait that is often inherited with CF, meconium ileus, was useful in identifying the gene that causes CF. Researchers found that meconium ileus and CF were inherited together in families, suggesting that they were caused by mutations in the same gene. This led to the identification of the gene responsible for CF, the CFTR gene.

Which of the Following Was Useful in the Identification of the Gene