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| Why is red hair so rare? http://choxaydung.vn/forum/viewtopic.php?f=35&t=72162 |
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| Người gửi: | John_Alex216 [ Chủ nhật 29/01/23 18:54 ] |
| Tiêu đề bài viết: | Why is red hair so rare? |
Ever wonder why redheads make up less than 2% of the population? It's all about science, genes, and a little luck! red human hair occurs when the MC1R gene is present. This is a recessive gene that must be carried by both parents in order for a child to have red hair. |
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