01:119:115 Lecture Notes - Lecture 12: Pea, Gregor Mendel, Blending Inheritance
27 Sep 2016
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We knew offspring resembled parents, but we didn"t have a mechanism for this until the 20th century. Ex: hair color trait - detectable variant of a character c. iii. 1. ex. red hair vs. brunette hairanric a. i. 1: genotype - genetic makeup; what alleles are present, phenotype - observable, physical trait e. i. A. 3. a) work was rediscovered in 1900 (a. 3. a. 1) his work became the foundation of genetics: experimental organism: garden pea. Thus transferred pollen by hand (b. 2. e. 5. a. i. a. i) from different flower: characters used. For each character, two different variants: applied quantitative methods to his work. Documented protocols meticulously (d. 1. b. 1) recorded data: developed true-breeding lines. True-breeding: always express same trait, generation to generation after self fertilization. E. 1. b) equal to all individuals express same traits/characteristics. Everyone within same generation expresses same phenotype after fertilization (e. 1. b. 1) phenotype: physical appearance. Testing blending inheritance : blending inheritance hypothesis: Gametes contain sampling of fluids from parents" bodies. Equal mixture of both parents: experimental crosses.
