A cross that examines two different traits is known as what?

A cross that examines two different traits is known as what?

• A. Monohybrid cross
• B. Pedigree
• C. Test cross
• D. Dihybrid cross

Answer: (D)

Two-trait inheritance is being tested here. A dihybrid cross looks at how two different traits are inherited together, with each trait typically governed by two alleles and assuming independent assortment. The classic example is crossing individuals that are heterozygous for both traits (AaBb x AaBb), which reveals the combined outcomes for both traits, often summarized by the 9:3:3:1 phenotypic ratio when genes assort independently. This differs from a monohybrid cross, which follows one trait; a test cross, which helps determine unknown genotype for a single trait by crossing with a homozygous recessive; and pedigrees, which track inheritance across generations rather than perform a cross. So the described cross is a dihybrid cross.

Two-trait inheritance is being tested here. A dihybrid cross looks at how two different traits are inherited together, with each trait typically governed by two alleles and assuming independent assortment. The classic example is crossing individuals that are heterozygous for both traits (AaBb x AaBb), which reveals the combined outcomes for both traits, often summarized by the 9:3:3:1 phenotypic ratio when genes assort independently. This differs from a monohybrid cross, which follows one trait; a test cross, which helps determine unknown genotype for a single trait by crossing with a homozygous recessive; and pedigrees, which track inheritance across generations rather than perform a cross. So the described cross is a dihybrid cross.