Alec J. Jeffreys discovered the fundamental technique involved in DNA finger printing, while he was studying the gene for a. dystrophin b. myoglobin c. haemoglobin d. tubulin

Sure, here are some step-by-step solutions using LaTeX: 1. To solve for x in the equation 2x + 5 = 11, we first isolate the variable by subtracting 5 from both sides: $\begin{array}{rl}2x+5-5& =11-5\\ 2x& =6\end{array}$ 2. Next, we can solve for x by dividing both sides by 2: $\begin{array}{rl}\frac{2x}{2}& =\frac{6}{2}\\ x& =3\end{array}$ Therefore, the solution to the equation 2x + 5 = 11 is x = 3. 3. To solve for y in the equation 3y - 7 = 8, we first isolate the variable by adding 7 to both sides: $\begin{array}{rl}3y-7+7& =8+7\\ 3y& =15\end{array}$ 4. Next, we can solve for y by dividing both sides by 3: $\begin{array}{rl}\frac{3y}{3}& =\frac{15}{3}\\ y& =5\end{array}$ Therefore, the solution to the equation 3y - 7 = 8 is y = 5. 5. To solve for z in the equation 4z + 2 = 18, we first isolate the variable by subtracting 2 from both sides: $\begin{array}{rl}4z+2-2& =18-2\\ 4z& =16\end{array}$ 6. Next, we can solve for z by dividing both sides by 4: $\begin{array}{rl}\frac{4z}{4}& =\frac{16}{4}\\ z& =4\end{array}$ Therefore, the solution to the equation 4z + 2 = 18 is z = 4. These step-by-step solutions can help students better understand how to solve equations and apply these techniques to similar problems.