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Biology 9th Edition by Eldra Solomon,Linda Berg ,Diana Martin
Edition 9ISBN: 978-0538741255Biology 9th Edition by Eldra Solomon,Linda Berg ,Diana Martin
Edition 9ISBN: 978-0538741255 Exercise 5
ANALYZING DATA. Develop a simple hypothesis that would explain the behavior of each of the following types of mutants in E. coli:
Mutant a: The map position of this mutation is in the trp operon. The mutant cells are constitutive; that is, they produce all the enzymes coded for by the trp operon, even if large amounts of tryptophan are present in the growth medium.
Mutant b: The map position of this mutation is in the trp operon. The mutant cells do not produce any enzymes coded for by the trp operon under any conditions.
Mutant c: The map position of this mutation is some distance from the trp operon. The mutant cells are constitutive; that is, they produce all the enzymes coded for by the trp operon, even if the growth medium contains large amounts of tryptophan.
Mutant a: The map position of this mutation is in the trp operon. The mutant cells are constitutive; that is, they produce all the enzymes coded for by the trp operon, even if large amounts of tryptophan are present in the growth medium.
Mutant b: The map position of this mutation is in the trp operon. The mutant cells do not produce any enzymes coded for by the trp operon under any conditions.
Mutant c: The map position of this mutation is some distance from the trp operon. The mutant cells are constitutive; that is, they produce all the enzymes coded for by the trp operon, even if the growth medium contains large amounts of tryptophan.
Explanation
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Consider the following case:
A mutation ...
Biology 9th Edition by Eldra Solomon,Linda Berg ,Diana Martin
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