Question

step 3: predict the offspring of a dihybrid cross (bbee × bbee)
the punnett square shows a text cross of mice that are heterozygous for both traits. what will their offspring be? fill in the white boxes of the punnett square with all possible offspring genotypes.
a female mouse that is heterozygous for both genes (bbee)
a male mouse that is heterozygous for both genes (bbee)

Explanation:

Step1: Determine gametes

For \( BbEe \), gametes are \( BE \), \( Be \), \( bE \), \( be \).

Step2: Fill Punnett square

• \( BE\times bE \): \( BbEE \)
• \( BE\times be \): \( BbEe \)
• \( Be\times bE \): \( BbEe \)
• \( Be\times be \): \( Bbee \)
• \( bE\times BE \): \( BbEE \)
• \( bE\times Be \): \( BbEe \)
• \( bE\times bE \): \( bbEE \)
• \( bE\times be \): \( bbEe \)
• \( be\times BE \): \( BbEe \)
• \( be\times Be \): \( Bbee \)
• \( be\times bE \): \( bbEe \)
• \( be\times be \): \( bbee \)

Answer:

Punnett Square	\( BE \)	\( Be \)	\( bE \)	\( be \)
\( Be \)	\( BBEe \)	\( BBee \)	\( BbEe \)	\( Bbee \)
\( bE \)	\( BbEE \)	\( BbEe \)	\( bbEE \)	\( bbEe \)
\( be \)	\( BbEe \)	\( Bbee \)	\( bbEe \)	\( bbee \)