Choose the incorrect statement related to Barr bodya. Found attached to nuclear envelope in buccla mucosa cells b. Barr body is the heterochromatinised X-chromosome c. Occurs as drumstick body in the neutrophils d. Of the two chromosomes in a female, only maternal chromosome becomes the Barr body

Sure, here are some step-by-step solutions using LaTeX: Example 1: Solving a quadratic equation Given the quadratic equation: $x^2+5x+6=0$ Step 1: Identify the values of $a$, $b$, and $c$ in the equation: $a=1$, $b=5$, $c=6$ Step 2: Use the quadratic formula to solve for x: $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$ Step 3: Substitute the values of $a$, $b$, and $c$ into the formula: $x=\frac{-5\pm \sqrt{5^2-4(1)(6)}}{2(1)}$ Step 4: Simplify the expression under the square root: $x=\frac{-5\pm \sqrt{1}}{2}$ Step 5: Simplify the expression further: $x_1=-3$ and $x_2=-2$ Therefore, the solutions to the equation are $x_1=-3$ and $x_2=-2$. Example 2: Solving a system of linear equations Given the system of equations: $\{\begin{array}{l}2x+3y=8\\ 4x-5y=-13\end{array}$ Step 1: Choose a variable to eliminate. In this case, we can eliminate $y$ by multiplying the first equation by 5 and the second equation by 3: $\{\begin{array}{l}10x+15y=40\\ 12x-15y=-39\end{array}$ Step 2: Add the two equations together to eliminate $y$: $22x=1$ Step 3: Solve for $x$: $x=\frac{1}{22}$ Step 4: Substitute the value of $x$ into one of the original equations to solve for $y$: $2(\frac{1}{22})+3y=8$ Step 5: Simplify the equation and solve for $y$: $3y=\frac{173}{22}$ Step 6: Simplify the expression further: $y=\frac{173}{66}$ Therefore, the solution to the system of equations is $x=\frac{1}{22}$ and $y=\frac{173}{66}$.