Codominant Incomplete Dominance Practice Worksheet Answer Key Fish Apr 2026

Organism used: Tropical fish (e.g., bettas, guppies, or cichlids) Traits: Skin/fin color patterns Part 1: Incomplete Dominance (Blending) In incomplete dominance, neither allele is fully dominant. Heterozygotes show a blended intermediate trait. Question 1 In a certain fish species, Red (R) and White (R') alleles show incomplete dominance.