Question

19 multiple choice 1 point in a dihybrid cross of ttpp x ttpp, tall (t) vs. short (t) and purple (p) vs. white (p), what proportion would be tall/white? 9/16 3/16 1/4 1/16

Explanation:

Step1: Analyze Tt x Tt (tall/short)

For the Tt x Tt cross, using the Punnett square, the genotypes are TT, Tt, Tt, tt. The probability of tall (T_) is $\frac{3}{4}$ (since TT, Tt, Tt are tall).

Step2: Analyze Pp x Pp (purple/white)

For the Pp x Pp cross, the genotypes are PP, Pp, Pp, pp. The probability of white (pp) is $\frac{1}{4}$.

Step3: Multiply the probabilities

To find the proportion of tall/white, multiply the probability of tall and white: $\frac{3}{4} \times \frac{1}{4} = \frac{3}{16}$.

Answer:

3/16 (corresponding to the option "3/16")