Dihybrid crosses Transitional Reasoning Download PDF
1 Biology practice questions on Dihybrid crosses. Questions that build towards applied reasoning.
Questions
- 1.
In garden peas, the allele for round seeds (R) is dominant to the allele for wrinkled seeds (r), and the allele for green pods (G) is dominant to the allele for yellow pods (g), with both gene pairs assorting independently. A plant breeder crosses a dihybrid plant heterozygous for both traits with a plant displaying wrinkled seeds and heterozygous green pods. If this cross yields 320 offspring, what is the expected number of plants exhibiting the phenotype of round seeds and yellow pods?