Consider the following statements regarding genetic crosses: 1. A typical Mendelian monohybrid F2 phenotypic ratio is 3:1, while the genotypic ratio is 1:2:1. 2. A dihybrid cross involving two independent heterozygous genes yields an F2 phenotypic ratio of 9:3:3:1. 3. The test cross ratio for a dihybrid individual (AaBb x aabb) is 1:1:1:1. Which of the statements given above is/are correct?

Options:

• A: 1 and 2 only
• B: 1 and 3 only
• C: 2 and 3 only
• D: 1, 2 and 3

Related Practice Questions:

• Let $S_1$ and $S_2$ be two disjoint, non-empty convex sets in $\mathbb{R}^n$. Under which of the following conditions is there guaranteed to exist a hyperplane that strictly separates $S_1$ and $S_2$?
• Let the primal linear programming problem be: Maximize $Z = c^T x$ subject to $Ax \le b, x \ge 0$. If this primal problem has an unbounded optimal objective value, then which of the following statements is always true regarding its dual problem?
• Let $S = \{(x, y) \in \mathbb{R}^2 \mid x^2 + y^2 \le 9\}$ be a convex set in $\mathbb{R}^2$. The set of all extreme points of $S$ is given by:
• In a linear programming problem with $3$ independent equality constraints and $5$ variables (including slack/surplus variables), what is the maximum possible number of basic solutions?