1. Dihybrid Cross Notes

2. Mono Review
Free earlobes are dominant over attached earlobes. If a heterozygous man marries a heterozygous women what would be the ratios of the genotype and phenotype of the their offspring??

3. Dihybrid Crosses (Example 1)
In humans, hitchhiker’s thumb (t) is recessive to a straight thumb (T) and dimples (D) is dominant to no dimples (d). Cross a marriage between a heterozygous straight thumb, no dimpled man with a woman who has a hitchhiker’s thumb and is homozygous dominant with dimples. Give the phenotypic and genotypic ratios of the offspring.