Viewing entries tagged
Genetics

Researchers discover that DNA naturally fluoresces

Researchers discover that DNA naturally fluoresces

Breaking a fundamental textbook belief, a new study suggests that DNA and RNA give off light, contrary to the current idea that it neither emits nor absorbs light. After shining visible light onto the molecules, they will fluoresce for about two hours. Why? Not sure yet, but the team of professors Vadim Backman, Hao Zhang, and Cheng Sun are eager to find out more.

Source: http://phys.org/news/2016-08-dna-naturally-fluoresces.html

Image Source: By Pixabay (http://pixabay.com) [CC0], via Wikimedia Commons

 

Ancient reptiles saw red before turning red

Ancient reptiles saw red before turning red

Birds and turtles, two animals that seem unrelated, actually have a shared gene allowing them to see more shades of red than humans can see. This means that birds and turtles have the same 250 million year old ancestor. Even cooler, because birds descended from dinosaurs, there is a strong possibility that dinosaurs also viewed the world in red!

Source: https://www.sciencenews.org/article/ancient-reptiles-saw-red-turning-red

Image Source: By Brocken Inaglory (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY-SA 4.0-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/4.0-3.0-2.5-2.0-1.0)], via Wikimedia Commons

Desert elephants pass on knowledge—not mutations—to survive

Desert elephants pass on knowledge—not mutations—to survive

An elephant never forgets... to remember not to forget how to survive. The main idea here is that elephants of all breeds are quick adapters, so the species doesn't need to rely on gradual genetic mutations to prevent mass endangerment. After analyzing the DNA between Namibian desert elephants and African savannah elephants, researchers made the conclusions that elephants possess "high learning capabilities."

Source: http://phys.org/news/2016-08-elephants-knowledgenot-mutationsto-survive.html#jCp

Image Source: By Namibnat (http://www.flickr.com/photos/namibnat/4944955254/) [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons