Ch. 15 - Gene Mutation, DNA Repair, and Transposition
Back
Problem 1a
How do we know that mutations occur randomly?
Problem 1b
How do we know that certain chemicals and wavelengths of radiation induce mutations in DNA?
Problem 1c
How do we know that DNA repair mechanisms detect and correct the majority of spontaneous and induced mutations?
- Write a short essay contrasting how these concepts may differ between bacteria and eukaryotes.
Problem 2
- What is a spontaneous mutation, and why are spontaneous mutations rare?
Problem 3
Problem 4
Why would a mutation in a somatic cell of a multicellular organism not necessarily result in a detectable phenotype?
Problem 5
Most mutations are thought to be deleterious. Why, then, is it reasonable to state that mutations are essential to the evolutionary process?
Problem 6
Why is a random mutation more likely to be deleterious than beneficial?
Problem 7
Most mutations in a diploid organism are recessive. Why?
Problem 8
What is the difference between a silent mutation and a neutral mutation?
- Describe a tautomeric shift and how it may lead to a mutation.
Problem 9