Has evolution by natural selection recently occurred in populations of M. tuberculosis?

+1 vote

 

No. M. tuberculosisis still the same species.

Yes. The frequency of the adaptive allele for drug resistance in M. tuberculosis has increased over time.

No. Evolution has not occurred, because the resistance trait occurs with a frequency of only approximately 10 percent.

Yes. Some people are now resistant to tuberculosis, but before they weren't. The resistance alleles have changed frequency in some human populations.

 

asked Dec 28, 2012 in Biology by anonymous
    

1 Answer

0 votes

 

Yes. The frequency of the adaptive allele for drug resistance in M. tuberculosis has increased over time.

 

answered Dec 28, 2012 by anonymous

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