Dihybrid Crosses Doodle Notes featuring fun monster characters, rules, and three practice problems for teaching genetics.

- Dihybrid crosses analyze the inheritance of two traits simultaneously using a 4x4 Punnett square.
- Parental gametes are determined using the FOIL method (First, Outer, Inner, Last) for heterozygous parents like BbYy.
- Each parent produces four unique gamete combinations: BY, By, bY, by.
- The 16-square grid represents all possible offspring genotype combinations from combining parental gametes.
- Phenotypic ratios typically follow a 9:3:3:1 pattern for two independently assorting traits with complete dominance.
- Practice problems involve identifying parental genotypes, listing gametes, filling the Punnett square, and calculating genotype/phenotype probabilities.