Xeroderma Pigmentosum: Mutations and DNA Repair

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What is the purpose of replica plating in mutation detection?

To screen for mutant strains of a colony-forming microorganism

What is a common conditional mutation used in mutation detection?

Heat sensitivity

What is the purpose of incubating at different temperatures in conditional mutation detection?

To screen for conditional mutations

How are microorganisms like E. coli and yeast screened for resistance to viruses?

By screening for growth when wild-type cells will not

What is the purpose of molecular screens in mutation detection?

To detect targeted mutations

What techniques are used in molecular screens for mutation detection?

PCR, restriction enzyme analysis and DNA probing

What is the advantage of using microorganisms like E. coli and yeast in mutation detection?

They are easily screened for resistance to viruses, chemicals or drugs

What is the purpose of isolating conditional mutations in mutation detection?

To study genes that are usually lethal

What is the advantage of using conditional mutations in mutation detection?

They allow for the study of genes that are usually lethal

What is the purpose of screening for mutant strains of a colony-forming microorganism?

To select for further study

This quiz covers the genetic disorder Xeroderma Pigmentosum, caused by mutations in a repair gene, leading to photosensitivity, skin damage, and increased cancer risk. It also explores the role of excision repair in maintaining DNA integrity.

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