HMB265H1 Lecture Notes - Lecture 3: Gregor Mendel, August Krogh, Pisum

• School: UTSG
• Department: Human Biology
• Course: HMB265H1
• Professor: Naomi Levy-Strumpf, Stephen Wright

Document Summary

Artificial selection purposeful control of mating; first applied genetic technique. Domestication of dogs & crops (rice, wheat, barley etc. ) was key for human civilization. Maroavian sheep breeders if the ram"s traits were inherited by its offspring, then its value would change. One parent contributes more to an offspring"s inherited traits. Aristotle contended it was the male & that a fully formed homunculus was inside the sperm. Blended inheritance blend of both parents. Did not explain siblings or the next generation. ** however, neither could explain how some traits would appear, disappear and reappear again ** Gregor mendel right mind (interdisciplinary education); proper equipment (for data) & appropriate biological material (for his experiments) August krogh principle model organism (mendel chose an appropriate model system) Can be inbred (self-fertilize) need identical copies. Ability to cross-fertilize as well (look at genetic interactions) Reciprocal crosses give one trait to one parent; then give same trait to the other parent.