Explain how natural selection causes the sickle cell allele to persist in some gene pools.

People who have the gene on one allele are immune to malaria. they then have a higher chance of survival and are able to have children in turn passing down the sickle cell gene.

Explain how antibiotic resistance may evolve in bacteria.

The bacteria with a genetic mutation making them immune to antibiotics survive and reproduce passing the trait down to offspring.

medicine that kills or slows the growth of bacteria

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Question	Answer
Explain how natural selection causes the sickle cell allele to persist in some gene pools.	People who have the gene on one allele are immune to malaria. they then have a higher chance of survival and are able to have children in turn passing down the sickle cell gene.
Explain how antibiotic resistance may evolve in bacteria.	The bacteria with a genetic mutation making them immune to antibiotics survive and reproduce passing the trait down to offspring.
antibiotic	medicine that kills or slows the growth of bacteria