Cystic fibrosis is caused by a defect in a single gene what specifically does the gene code for? A. The production of mucus
B. The airways that lead to the lungs
C. Proteins that make up red blood cells
D. Proteins that carry chloride ions across the cell membrane

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Select all the offspring phenotypes that could be produced from a bbee x bbee cross (shown above). black fur, red eyes black fur, black eyes white fur, black eyes white fur, red eyes re la heller t est hulle elle l aila el answer : b & c b: black fur ,black eyes c: white fur , black eyes