BIOL 234 - Tutorial 5 part 1 - BIOL 234 Summer 2017...

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BIOL 234 Summer 2017 Tutorial 5 – Crossing over and linkage Part 1 – complete before the tutorial to receive completion marks Learning outcomes 1. Analyze data from a cross (genotypes/phenotypes), and recognize crosses that must involve linked genes. Justify your analysis by describing the information in the data that allows you to determine that genes are linked. 2. Explain how crossing over (or recombination frequency) between two linked loci affects the genotype frequencies of the products of meiosis, compared to loci that are unlinked, or very tightly linked. 3. Determine the allelic configuration of the individuals involved in the cross, and explain how recombinant allele configurations were created from this arrangement. 4. Use numerical data from genetic crosses to calculate the map distance between linked genes. 5. Given the map distance between two linked loci, create a potential data set, including the frequency of offspring genotypes and/or phenotypes, for a given cross.
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