Q1. Johnny fractured lower third of his right tibia in a skiing accident. The soft tissues in the area were severely damaged and their surgical removal was necessary. After prolonged immobilization, it was found that Johnny was healing extremely poorly. Why did Johnny have poor healing? Q2. Assume you have […]

In tomatoes, the three mutant traits, dwarfness, green flesh, and white flowers, are due to the homozygous recessive state of the genes d, gf, and wf (respectively). A dwarf, green-fleshed, white-flowered plant is crossed as the pollen parent to the homozygous normal plant. a. Diagram the cross, using the forked-line […]

Two genes in chromosome 7 of corn are identified by the recessive alleles gl (glossy), determining glossy leaves, and ra (ramosa), determining branching of ears. When a plant heterozygous for each of these alleles was crossed with a homozygous recessive plant, the progeny consisted of the following genotypes with the […]

Piltdown Hoax — Today?:The Piltdown Hoax had a decades-long negative impact on our understanding of human evolution. One of the issues that science grapples with today, is the rush to publish “new finds” on the web before peer review and discipline-wide assessment has occurred. Could this result in another Piltdown Hoax today? Why […]