Answer:
true deafness is actually recessive
The site in a polynucleotide chain as to where the restriction enzyme cleaves nucleotides by hydrolyzing the phosphodiester bond between them.
Both the smooth and rough endoplasmic reticulum help in the production and storage of proteins The main difference is that one contains ribosomes on it and the other does not. The rough endoplasmic reticulum has ribosomes on its surface. This is what give the RER a "rough" appearance.
White Blood Cells could be a possible answer. Not sure if this is multiple choice or not.