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<blockquote data-quote="Loudmouth" data-source="post: 70871226" data-attributes="member: 11790"><p>Something to consider . . .</p><p></p><p>HIV attaches to a protein on host cells called CCR5. As it turns out, people with a mutation in CCR5 are resistant to HIV. This mutation was just sitting out in the human population, but when HIV came around it turned out to be useful.</p><p></p><p style="margin-left: 20px"></p> <p style="margin-left: 20px">People with two copies of the CCR5 delta32 gene (inherited from both parents) are virtually immune to HIV infection. This occurs in about 1% of Caucasian people.</p> <p style="margin-left: 20px"></p> <p style="margin-left: 20px">One copy of CCR5-delta32 seems to give some protection against infection, and makes the disease less severe if infection occurs. This is more common, it is found in up to 20% of Caucasians.</p> <p style="margin-left: 20px"><a href="http://genetics.thetech.org/original_news/news13" target="_blank">The Evolving Genetics of HIV | Understanding Genetics</a></p><p></p><p>If we decide to eliminate genetic diversity in the name of human bigotry and bias, we may actually be eliminating mutations that the human population will need farther down the road. A genetically diverse population is the best bet for meeting the challenges our species will face in the future.</p></blockquote><p></p>
[QUOTE="Loudmouth, post: 70871226, member: 11790"] Something to consider . . . HIV attaches to a protein on host cells called CCR5. As it turns out, people with a mutation in CCR5 are resistant to HIV. This mutation was just sitting out in the human population, but when HIV came around it turned out to be useful. [indent] People with two copies of the CCR5 delta32 gene (inherited from both parents) are virtually immune to HIV infection. This occurs in about 1% of Caucasian people. One copy of CCR5-delta32 seems to give some protection against infection, and makes the disease less severe if infection occurs. This is more common, it is found in up to 20% of Caucasians. [URL="http://genetics.thetech.org/original_news/news13"]The Evolving Genetics of HIV | Understanding Genetics[/URL][/indent] If we decide to eliminate genetic diversity in the name of human bigotry and bias, we may actually be eliminating mutations that the human population will need farther down the road. A genetically diverse population is the best bet for meeting the challenges our species will face in the future. [/QUOTE]
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