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Lecture 15

Lecture 15 Notes

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Department
Biology
Course
BIO120H1
Professor
Jean Jiang Nash
Semester
Fall

Description
BIO120 Lecture 15 Nov 10 2010 Variation Variation- variation among individuals in a population Heredity- progeny resemble their parents more than unrelated individuals Selection- some forms better at surviving and breeding in a given environment Terms: Genotype- genetic constitution of an organism. Aa Bb Phenotype- the organism as observed. Used when discussing a train. Product of interaction between genes and environment. Genome- the entire organisms DNA including both genes and non-coding regions. What is a gene: Functional unit of inheritance Contains info located on chromosomes consisting of DNA Dna sequence composed of codons. Where does genetic variation come from?: 1. mutation- ultimate source of genetic variation 2. recombination 3. gen
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