Question

In a trihybrid cross involving three different genes (\( AaBbCc \times AaBbCc \)), what is the expected genotypic ratio among the offspring?

• A. \( 1:1:1:1:1:1:1:1 \)
• B. \( 27:9:9:9:3:3:3:1 \)
• C. \( 64:16:16:16:16:4:4:4:1 \)
• D. \( 81:27:27:27:27:9:9:9:9:3:3:3:1 \)

Hint:

For dihybrid and trihybrid crosses, the phenotypic ratios can be derived using the expansion of \( (3+1)^n \), where \( n \) is the number of genes.