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One factor that makes it hard for pathogens and hosts to evolve \"perfect\" attacks or defenses...

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Biology

One factor that makes it hard for pathogens and hosts to evolve\"perfect\" attacks or defenses is that natural selection acts onexisting systems, which means that altering a system to fit aparticular time and situation may make it less fit in othersituations. A prime example of this is:

> VSG switching.

> All of the above.

> Somatic Recombination vs. Somatic Hypermutation.

> The CCR5 gene and the CCR5-delta32 mutation case.

Answer & Explanation Solved by verified expert
3.8 Ratings (537 Votes)
VSG variantspecific surface glycoprotein switching is a response by the parasites in order to evade the host immune response as it helps in increasing viability of pathogen in the bloodstream and tissue fluids It is a more generalized mechanism that protect the    See Answer
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