What term describes a cross between organisms that differ in two characteristics?

• A. Two-factor cross
• B. Monohybrid cross
• C. Back cross
• D. Dihybrid cross

Answer: (A)

Two-factor cross describes crossing organisms that differ in two traits, signaling that two genes (factors) are being analyzed together. This directly matches the scenario of comparing two differing characteristics and studying how two loci segregate and assort in offspring. A monohybrid cross involves one trait, a back cross is a cross back to a parental type, and a dihybrid cross is the standard term for two-trait crosses (it's the same idea, but the two-factor wording emphasizes the two factors being examined).