hottie99 wrote:NO one has a thought on this?? where did bioguy go?? 
oops, sorry i don't know the answer. will find out soon.
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| yarab99
Forum Elite
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its revers transcriptase error.....nef upregulates the CD4 receptors
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| hottie99
Forum Guru
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yes friend, now i know, i wrote that earlier, hehehee good morning for u!! 
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| macintosh
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Dear hottie, the question asks about emergence of VARIANTS. There is only one way to bring in more variants, which is mutation. Among the answer choices, the right answer is having an error prone reverse transcriptase, as errors cause mutant strains of the virus.
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| macintosh
Forum Elite
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By the way NEF is "Negative Factor". It functions to destroy CD4 molecules on helper T cells. This helps the virus endocytose the T cell while evading host defenses.
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| hottie99
Forum Guru
Topics: 32
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yes that is what i had thought, thx for giving u input allowing me to confirm my initial thought, good luc!! 
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