A human genetic disorder caused by a recessive allele for a chloride channel protein; characterized by an excessive secretion of mucus and consequent vulnerability to infection; fatal if untreated.Group of answer choicescystic fibrosissickle-cell diseaseHuntington’s diseaseTay-Sachs diseaseNext

Tips1 ptsA human genetic disorder caused by a recessive allele for a chloride channel protein; characterized by an excessive secretion of mucus and consequent vulnerability to infection; fatal if untreated.Group of answer choicessickle-cell diseasecystic fibrosisTay-Sachs diseaseHuntington’s diseaseNext

A human genetic disease caused by a dominant allele; characterized by uncontrollable body movements and degeneration of the nervous system; usually fatal 10 to 20 years after the onset of symptoms.Group of answer choicessickle-cell diseasecystic fibrosisHuntington’s diseaseTay-Sachs diseaseNext

A human genetic disease caused by a sex-linked recessive allele resulting in the absence of one or more blood-clotting proteins, and characterized by excessive bleeding following injury.Group of answer choicessickle-cell diseasehemophiliaDown syndromeTay-Sachs diseaseDuchenne muscular dystrophyHuntington’s diseaseNext

One type of mutation in the CFTR protein prevents the transport of chloride ions through the channel. What is most likely to be observed in the lungs of patients with this mutation?A. Dehydrated epithelial cellsB. Dehydrated mucusC. Mucus with excess waterD. Mucus with a high electrolyte concentration

A recessively inherited human blood disorder in which a single nucleotide change in the α-globin gene causes hemoglobin to aggregate, changing red blood cell shape and causing multiple symptoms.Group of answer choicessickle-cell diseaseHuntington’s diseasecystic fibrosisTay-Sachs diseaseNext