5. Which of the following statements is NOT correct Ans A. Every cell in the human body contains DNA B. Genetics should be viewed as a probability C. Non-coding RNA transcribed from DNA have important roles in regulating the expression of genes D. Each of us carries 15-20 lethal mutations 6. What percent of genes in Humans encode proteins? Ans A. 22 , 000 1 2% of the DNA B. 22 , 000 10 20% of the DNA C. 11 , 000 1 2% of the DNA D. 11 , 000 10 20% of the DNA 7. A gene family is a group of genes that share important characteristics. In many cases, genes in family share a similar sequence of DNA building blocks (nucleotides). The largest gene family encodes for: Ans A. Longevity genes B. Immunoglobulins C. Blood types (Rh, A,B, and O) D. Intelligence genes.