Test
Dihybrid cross practice
This classroom material offers 10th-grade students practice with dihybrid crosses, focusing on two-trait inheritance, gamete formation using FOIL, and calculating phenotypic ratios like 9:3:3:1 through independent assortment. Activities include identifying gametes, sequencing FOIL steps, and solving probability problems.
By Edform · Biology · Grade 10 · Published Oct 15, 2026 · New
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Questions
- What is the expected phenotypic ratio in the F2 generation of a dihybrid cross (AaBb x AaBb) if both traits show complete dominance and assort independently?
- Which of the following gametes can be produced by an individual with genotype AaBb?
- Place the steps of using the FOIL method to determine gametes from a genotype AaBb in the correct order.
- Fill in the blanks: In a cross between AaBb x AaBb, the probability of getting an offspring with the genotype aabb is ___.
- In a dihybrid cross, the law of ___ explains why alleles for different traits separate independently during gamete formation.
- Match each genotype to its correct phenotype, assuming A and B are dominant and a and b are recessive.
- Sort the following offspring phenotypes from a dihybrid cross into the correct categories.
- Mark each statement about dihybrid crosses as true or false.
- What is the term for the process by which alleles for different traits separate independently during gamete formation? (Acceptable answers: independent assortment, law of independent assortment)
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