01:119:115 Lecture Notes - Lecture 12: Gregor Mendel, Gynoecium, Stamen
2 May 2016
School
Department
Course
Professor
Document Summary
Introduction for centuries, we knew characteristics passed form parent to offspring. Darwin didn"t know anything about genes and chromosomes. Mechanism of inheritance not well understood until this century with gregor. Mendel used the scientific approach to identify two laws of inheritance. First to discover basic rules of inheritance in eukaryotes. Published findings in 1865, but importance of work not realized at time. Mendel"s work has become foundation of science of genetics. He discovered the basic principles of heredity by breeding garden peas. Flowers have: stamen (male) and carpel (female: normally self fertilize: Pollen grains from stamens land on carpel of same flower: experimental cross pollination: Remove anthers before mature pollen produced prevent self-fertilization. Character: a heritable feature that varies among individuals. Mendel selected 7=/ pairs of characters(=/ varities of peas) He qualified his findings (not merely described: used experimental approach a. i. planned experiments a. ii. recorded data, mathematical analysis of results a. i. first to apply quantitative methods to study of inheritance.
