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Biol 121- 2010.02.05- Genetics- Mendelian Genetics (Ch. 13).docx

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University of British Columbia
BIOL 121
Carol Pollock

Biol 121 225 Freeman 265276 Ch 13Feb 5 10 Hereditary inheritance or transmission of traits from parents to offspring Trait any characteristic of an individual ranging from overall height to primary structure of a particular membrane protein Model organism an appropriate model organism in order to study hereditary transmission oftraits desired characteristics for Mendel it was Pisum sativum pea plant model organism is a species where individuals areSmallshortlivedinexpensive to care forable to produce large numbers of offspringeasy to manipulate experimentally therefore can continue experiments over several generations and to collect data from a large number of individualsexperimental results from using model organisms applied to other spp Two additional features of the pea 1 Can control which parents are involved in mating that are good for experiments 2 Can arrange matings between individuals that differed in easily recognizable traits such as flower colourseed shape Genetics branch of biology that focuses on the inheritance of traits Phenotype observable features of an individual Pure line a pure line consists of individuals that produce offspring identical to themselves when selfpollinated or crossed to another member of the pureline population Hybridd offspring from matings bt truebreeding parents that differ in 1 traits Parental generation adults used in an initial experimental cross F1 and F2 generations F1 is the progeny of the parental generation or offspring F
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