Feather

Chicken Scales Turned to Feathers

Chicken scales turned to feathers (again).  Two scientists at University of Geneva have used a gene stimulating technique to get chicken embryos to develop feathers on their feet and legs instead of scales.  The method involved stimulating genes named Sonic Hedgehog (Shh), which have an important role in organising and developing body organs and structures […]

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Butterfly Wing Pattern

Butterfly Wing Patterns from “Junk” DNA

A century ago biologists suggested that butterfly wing patterns were formed from variations in a basic ground plan that was somehow manipulated to produce the distinct patterns in different butterfly species. Scientists at Cornell University and The George Washington University have now carried out a study that “explains how DNA that sits between genes – […]

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