Red hair is frequent where Rh- blood is frequent

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<blockquote class="wp-embedded-content" data-secret="htEaSs7dBz"><a href="https://www.rhesusnegative.net/staynegative/red-hair-is-frequent-where-rh-blood-is-frequent/">Red hair is frequent where Rh- blood is frequent</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.rhesusnegative.net/staynegative/red-hair-is-frequent-where-rh-blood-is-frequent/embed/#?secret=htEaSs7dBz" width="600" height="400" title="&#8220;Red hair is frequent where Rh- blood is frequent&#8221; &#8212; The Rh Negative Blog" data-secret="htEaSs7dBz" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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