Question

sarah is practicing punnett squares. based on this sample, which box did she not fill out correctly?
options: a. gg, b. gg, c. gg, d. gg

Explanation:

Step1: Analyze Punnett square rules

In a Punnett square, when crossing two parents (e.g., one with genotype \(Gg\) and the other with \(Gg\)), the alleles from each parent combine. The top - row alleles combine with the left - column alleles.

Step2: Check each box

• For box \(a\): Parent 1 contributes \(G\) (top - row) and Parent 2 contributes \(G\) (left - column), so \(GG\) is correct.
• For box \(b\): Parent 1 contributes \(G\) (top - row) and Parent 2 contributes \(g\) (left - column), it should be \(Gg\), but it is written as \(GG\), so this is incorrect.
• For box \(c\): Parent 1 contributes \(g\) (top - row) and Parent 2 contributes \(G\) (left - column), \(Gg\) is correct.
• For box \(d\): Parent 1 contributes \(g\) (top - row) and Parent 2 contributes \(g\) (left - column), \(gg\) is correct.

Answer:

B.