Natural selection has fueled the rise in MRSA (methicillin-resistant Staphylococcus aureus) infection by
A) enabling people to use a greater variety of antibiotic drugs to fight the infection.
B) inactivating a greater variety of antibiotic drugs.
C) enabling certain bacterial variants to survive in the presence of many antibiotic drugs.
D) killing all bacteria exposed to antibiotics,including helpful ones.
Correct Answer:
Verified
Q25: Balanced polymorphism explains why carriers of cystic
Q26: Deleterious alleles are eliminated from populations by
A)natural
Q27: _ in the human population reduced the
Q28: The population of HIV variants in a
Q29: Natural selection can alter gene frequencies in
Q31: Which of these affects allele frequencies the
Q32: Which of these best represents natural selection?
A)Recessive
Q33: In _,people with a serious genetic disorder
Q34: The frequency of the allele that causes
Q35: Mutation differs from other sources of genetic
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