Petra Haak und Haak-Bloem Person-Info 

( Ich bin Petra Haak)
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Why some non-ginger men wind up with red beards

nypost.com
· Scientist Petra Haak-Bloem from Erfocentrum, a Dutch organization that promotes genetics, explained the reason to online magazine ...

At last! The answer to why non-ginger guys have ginger beards – The...

www.thesun.co.uk
Scientist Petra Haak-Bloem explained it was down to a gene we all have called. MC1R. Hair colour is complex. Unlike other traits there is not ...

Why do non-ginger men have ginger beards? Science has the answer -...

www.mirror.co.uk
Petra Haak-Bloem from Erfocentrum, a Dutch organisation which promotes genetics, has explained why so many men have ginger beards

Genetics Expert Explains Why So Many Non-Ginger People Have Ginger...

www.ladbible.com
· Petra Haak-Bloem, from Erfocentrum, the Dutch national information centre for genetics and hereditary traits, told Motherboard in 2015: ...
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