Biologists Create Beetle With Functional Extra Eye

Biologists Create Beetle With Functional Extra Eye

Biologists create beetle with functional extra eye

On “Game of Thrones,” a three-eyed raven holds the secrets of the past, present and future in a vast fantasy kingdom. But for real-world biologists, a “three-eyed beetle” may offer a true glimpse into the future of studying evolutionary development.

Using a simple genetic tool, IU scientists have intentionally grown a fully functional extra eye in the center of the forehead of the common beetle. Unraveling the biological mechanisms behind this occurrence could help researchers understand how evolution draws upon pre-existing developmental and genetic “building blocks” to create novel complex traits, or “old” traits in novel places.

The study’s results appear in the journal of the Proceedings of the National Academy of Sciences. The work also provides deeper insights into an earlier experiment that accidentally produced an extra eye as part of a study to understand how the insect head develops.

“Developmental biology is beautifully complex in part because there’s no single gene for an eye, a brain, a butterfly’s wing or a turtle’s shell,” said Armin P. Moczek, a professor in the IU Bloomington College of Arts and Sciences’ Department of Biology. “Instead, thousands of individual genes and dozens of developmental processes come together to enable the formation of each of these traits.

Eduardo E. Zattara, Anna L. M. Macagno, Hannah A. Busey, Armin P. Moczek. Development of functional ectopic compound eyes in scarabaeid beetles by knockdown oforthodenticle. Proceedings of the National Academy of Sciences, 2017; 114 (45): 12021 DOI: 10.1073/pnas.1714895114

The creation of three-eyed beetles through a new technique developed at IU provides scientists a new way to investigate the genetic mechanisms responsible for the evolutionary emergence of new physical traits.Credit: Photo by Eduardo Zattara

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Xpand Your Horizons

Xpand Your Horizons is a growing online community that shares videos and other material aimed to intrigue people to think outside the box and expand the interest all around. The Xpand Your Horizons Family is sometimes shortened to "XYH" or "XYHor" here on Tumblr in our many secondary and more specific blogs. Our Family has compiled more than 60 playlists on YouTube now and has viewed every video to make sure that what is delivered is factual. If something appears questionable or the comment feedback alludes to mistakes, research is done and it is determined whether or not it's worth sharing. As of late, it is so easy to come across videos containing little to no actual research or are so heavily boggled down with opinions that you can find yourself in a battle of so-called "whits" on the internet. The Xpand Your Horizons Family doesn’t yet upload or produce any original content...yet... but we would like to make it known that We’re sharing all this contentbecause it's important to take Science seriously in a healthy and safe environment. Each playlist can be found on YouTube under the Xpand Your Horizons moniker and their specific topic(s) is/are displayed in the title, and further explanation is in their descriptions. Not all are academic inclined, some deal with pop culture as well as media. Enjoy!For more content, Click Here and experience this XYHor in its entirety!

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