Tongue rolling is recessive to no tongue rolling. What is th…

Tongue rolling is recessive to no tongue rolling. What is the probability of having a child who cannot roll their tongue when an individual who can roll their tongue mates with an individual heterozygous for tongue rolling? Hint: draw it out using letters of your choice!

Cystic fibrosis is a serious respiratory disease that is cau…

Cystic fibrosis is a serious respiratory disease that is caused by the expression of a mutant form of the cystic fibrosis transmembrane regulator (CFTR) protein. Suppose that gene therapy was being used to attempt to treat cystic fibrosis. What biological component would be required for this treatment?