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Strategy checklist! Does the trait skip generations? If so, it is recessive. Is the trait fairly equal between males and females? If so, it is autosomal. Are males affected more, if so, it could be x-linked recessive. If unsure, write possible genotypes for a few people and test your hypothesis. What is electrophoresis? Used to separate DNA by size. Powered by electricity, moves negative DNA to positive side through gel. Molecules that are smaller are able to move more easily through the web and