To create a Punnett square for one homozygous dominant individual (QQ) and one homozygous recessive individual (qq) for gene Q/q, follow these steps:

1. Set Up the Punnett Square: Draw a 2x2 grid.

2. Label the Rows and Columns:

   • On the top, write the alleles of the homozygous dominant parent (QQ).
   • On the side, write the alleles of the homozygous recessive parent (qq).

3. Fill in the Punnett Square:

   • Each box in the grid represents a possible genotype of the offspring.
   • Since the dominant parent contributes Q and Q, and the recessive parent contributes q and q, fill in the boxes as follows:

   | | Q | Q | |---|---|---| | q | Qq | Qq | | q | Qq | Qq |

4. Interpret the Results:

   • All offspring will have the genotype Qq, which means they will express the dominant trait associated with allele Q.

Thus, the Punnett square shows that 100% of the offspring will be heterozygous (Qq).