The rule of independent assortment states that alleles of one gene can segregate independently of alleles of other genes. In other words, the allele you pass on for one trait (for example, eye color) does not have any effect on the allele you pass on for some other trait (for […]

Things to know or review: 1. Describe the role of positive & negative feedback in the regulation of the immune response. Compare the 3 lines of immune defense, what happens to our immune response to pathogens if one line of defense fails? 2. Can the presence of non-pathogenic bacteria on […]

Volcanoes can destroy an ecosystem by killing the plants, wildlife, and affect the weather. These are major effects that can destroy an ecosystem. We need plants for medicine purpose as well as tree’s for fresh breeze. The volcanoes can rejuvinate the ecosystem by change in an arid volcanic lansdcape. An […]

A maternal effect gene in Drosophila, called torso, is found as a recessive allele (t) that prevents correct development of the anterior- and posterior-most body structures. A wild-type male is crossed to a female of unknown genotype. This mating produces 100% larva that are missing their anterior- and posterior-most structures […]