Question

compare the predicted values to the simulated values
black eyes red eyes black eyes red eyes
predicted fraction 9/16 3/16 3/16 1/16
predicted percentage 56.25% 18.75% 18.75% 6.25%
simulated fraction 5/10 2/10 2/10 1/10
simulated percentage 50% 20% 20% 10%
in the dihybrid cross, both of the parents had black fur and black eyes.
the offspring varied
complete
the predicted values for the four phenotypes form a ratio. the simulated values match this predicted ratio.
intro

Explanation:

Step1: Recall dihybrid cross ratio

In a typical dihybrid cross (assuming independent assortment and no gene - interaction), the phenotypic ratio of the offspring is \(9:3:3:1\).

Step2: Check predicted values

The predicted fractions are \(\frac{9}{16},\frac{3}{16},\frac{3}{16},\frac{1}{16}\). When we consider the ratio of these fractions (by multiplying each fraction by 16 to get rid of the denominator), we get \(9:3:3:1\).

Answer:

\(9:3:3:1\)