Homework SoursePut the following steps in the evolution of antibiotic resis
Put the following steps in the evolution of antibiotic resistance in the order in which they occur:
The antibiotic is more-or-less obsolete (useless, ineffective).
Selection favors compensatory mutations in the Ab-resistant population to favor the evolution of higher growth rates.
An advantageous mutation occurs that does not influence Ab-resistance, but increases growth rate.
The individual cell with the Ab-resistant allele survives and reproduces slowly.
Antibiotics are introduced into the environment.
A deleterious mutation occurs in a single cell that confers antibiotic resistance but compromises growth rate.
| The antibiotic is more-or-less obsolete (useless, ineffective). | |
| Selection favors compensatory mutations in the Ab-resistant population to favor the evolution of higher growth rates. | |
| An advantageous mutation occurs that does not influence Ab-resistance, but increases growth rate. | |
| The individual cell with the Ab-resistant allele survives and reproduces slowly. | |
| Antibiotics are introduced into the environment. | |
| A deleterious mutation occurs in a single cell that confers antibiotic resistance but compromises growth rate. |
Solution
Antibiotics are introduced into the environment.
A deleterious mutation occurs in a single cell that confers antibiotic resistance but compromises growth rate.
The individual cell with the Ab-resistant allele survives and reproduces slowly.
Selection favors compensatory mutations in the Ab-resistant population to favor the evolution of higher growth rates.
An advantageous mutation occurs that does not influence Ab-resistance, but increases growth rate.
The antibiotic is more-or-less obsolete (useless, ineffective).
