BIOL 1101 Chapter 16: Chapter 16 (Textbook and Class)
3 Dec 2016
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Early theories of heredity predicted the transmission of acquired characteristics: process of heredity transmits only the potential for producing traits present in parts (not the traits themselves) Solution (mendel): it is not traits that are transmitted in inheritance, it is genes that are transmitted. Focused on one trait (or a small number of traits) at a time with easily de ned. Counted the progeny of his crosses, looking for statistical patterns in the offspring of his crosses. In crosses, one of the traits was dominant in the offspring: p1 generation= parental generation, f1 generation= rst offspring. Dominant= the trait that appears in the f1 generation. Recessive= contrasting trait that does not appear. Genotype= particular combination of alleles present in an individual. Phenotype= expression of the trait in the individual. F2 generation= produced by allowing f1 owers to undergo self-fertilization, recessive trait appeared in this generation: recessive trait reappeared in a de nite numerical promotion, dominant: recessive ratio= 3:1.
