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BIOL 200 Week 10 Reading Quizzes

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BIOL 200 Week 10 Reading Quizzes What is a "genetic map"? ️️a map of the relative positions of genes (or any genetic loci) on a chromosome Why was the family that Dr. Nancy Wexler studied so useful? ️️members of the family were willing to donate DNA samples it was a very large family in which many individuals had Huntington's Disease On which chromosome did Dr. Wexler's team find a genetic marker that was linked Huntington's Disease? ️️chromosome 4 What is different between disease and normal alleles of the Huntington's disease gene (IT15)? ️️the HD alleles have more CAG codons than normal alleles How do bacteria use CRISPR/Cas9? ️️Bacteria store bits of viral DNA sequences in the CRISPR site of their genome

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BIOL 200 Week 10 Reading Quizzes
What is a "genetic map"? ✔️✔️a map of the relative positions of genes (or any genetic loci) on

a chromosome



Why was the family that Dr. Nancy Wexler studied so useful? ✔️✔️members of the family

were willing to donate DNA samples



it was a very large family in which many individuals had Huntington's Disease



On which chromosome did Dr. Wexler's team find a genetic marker that was linked Huntington's

Disease? ✔️✔️chromosome 4



What is different between disease and normal alleles of the Huntington's disease gene (IT15)?

✔️✔️the HD alleles have more CAG codons than normal alleles



How do bacteria use CRISPR/Cas9? ✔️✔️Bacteria store bits of viral DNA sequences in the

CRISPR site of their genome



Bacteria use CRISPR/Cas9 machinery to find, cut out, and degrade viral DNA later on, similar

to immunization in humans

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