How many contrasting characters were included by Mendel in his experiment?
Mendel studied 7 traits in pea plants, including height, color, and shape of seeds and pods.
Match the terms in Column-I with their description in Column-II and choose the correct option.
Find the values of \( x, y, z \) if the matrix \( A \) satisfies the equation \( A^T A = I \), where
\[ A = \begin{bmatrix} 0 & 2y & z \\ x & y & -z \\ x & -y & z \end{bmatrix} \]