Genetics worksheet illustrating dihybrid crosses in pea plants and humans, including Punnett squares and genotype/phenotype analysis for seed shape and color, earlobe type, tongue rolling, and cat fur color and hair length.

Dihybrid crosses Punnett square for pea plant seed traits, showing genotypes and phenotypes for round yellow, round green, wrinkled yellow, and wrinkled green seeds, with questions on probabilities.