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Lec18_140224.pdf

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Department
Statistics
Course
STAT151
Professor
Gregory Wagner
Semester
Winter

Description
Lec18 BIOL207 2014-02-24 A. Recombination a. definition: process that results in new combinations of traits; i.e. process that results in gametes with combinations of alleles that were not present in the gametes of the previous generation b. caused by random assortment of loci on non-homologous chromosomes c. occurs at meiosis d. a source of phenotypic variation between individuals within a population e. parental = “non-recombinant” f. note that recombination is used in other contexts in genetics g. if loci are not linked (e.g. on non-homologous chromosomes), 50% of gametes should be recombinant h. however: linked loci will have fewer than 50% recombinants B. Crossovers a. prophase I: non-sister chromatids break and rejoin in a reciprocal exchange of chromosome segments b. NORMAL, COMMON process;
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