Generally depending on the antibiotic they target the phospholipids on the plasma membrane of the bacteria in your system that is making you sick I say bacteria viruses generally mutate so frequently that their phospholipids cannot be targeted which is why when you have the flu all that can cure you is time, you can only hide the symptoms.
Answer:Blood type is controlled by multiple forms of a single gene, while the length of corn ears is controlled by many different genes.
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