Lecture 11 - Lecture 11 2/13/08 Definition of meiotic...

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Lecture 11 2/13/08 Definition of meiotic recombination: Any meiotic process that generates a haploid product with a  genotype that differs from both haploid genotypes that constituted the meiotic diploid cell. Independent assortment Meiotic recombination can occur by independent assortment of unlinked loci.  It can also occur  by  crossing over between two loci. Between any two loci, crossing over is usually rare.  In most meiosis, we will not see a cross  over.  We have many parental and few recombinants. Crossing over: Exchange of two pieces of DNA that are homologous or nearly homologous.  Enzymatic process. No 50% recombinance   loci on same chromosome. Old terminology: Invented before linkage Coupling: V+ ct+ V ct Repulsion: V+ ct V ct+ Coupling is when dominance is on one and recessive is on the other. Thomas Hunt Morgan 
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This note was uploaded on 04/07/2008 for the course BIO 325 taught by Professor Saxena during the Spring '08 term at University of Texas at Austin.

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Lecture 11 - Lecture 11 2/13/08 Definition of meiotic...

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