BIO 1130 Lecture Notes - Lecture 4: Allele Frequency, Punnett Square, Blending Inheritance

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Marc Charette

Document Summary

Chapter 4. 1 transmission of traits (inheritance): pre-mendel perspectives. Cells will difereatie and form different organs. Development of individuals theory until the 19th century. Homoncule mininature human in the sex cells. Thought egg (cid:449)as food fo(cid:396) the spe(cid:396)(cid:373) (cid:862)(cid:373)i(cid:374)i hu(cid:373)a(cid:374)(cid:863) Most people thought this before the 19th century. Using microscope saw that there was no mini human in sperm cell. Theory of blending inheritance: universitally accepted theory until the end of the 19th century. Both parents pariticpate equally in the genetic makeup of the offspring. For each tait the child would show an intermediate value between the traits of its parents. Theory of gemmules hereditary particles produced by each part of the body. When an organ is used, its grows and the more gemmules it contains. The gemmules would be transported in the bloodstream from all parts of the body and assemble in the gametes when they are formed. Gemmules would be the particles associated with the transmission of heredity.