Genetic differences among species, and within a species, can convey genetic immunity to certain diseases.

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Genetic differences among species, and even within a species, can lead to differences in immune system functions and responses. This can result in some individuals or populations having genetic immunity or resistance to certain diseases. For example, some people have a natural genetic mutation that makes them resistant to HIV infection, while other individuals are more susceptible to certain infectious diseases due to specific genetic variations.

Genetic Differences Among Species, and Within a Species, Can Convey