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Tag: "closest" at biology news

Breathing easy: When it comes to oxygen, a bug's life is full of it

...including opening the thoracic spiracles (the ones closest to the head) to take in oxygen while exhaling carbon dioxide through the abdominal spiracles. Insects also use different mechanisms to pump the oxygen to the tissues. This system is much more efficient than the system that vertebrates evolved. Ins...

Scientists discover new species of distinctive cloud-forest rodent

...of a squirrel and looks a bit like one, except its closest relatives are spiny rats. The nocturnal, climbi...n of this tropical American family, especially its closest relatives, the bush-tailed tree rats found in South America's lowlands. As a result of the recent di...

World's largest flower evolved from family of much tinier blooms

... pairs of DNA to determine that the giant flower's closest relatives are in the Euphorbiaceae family, many of which have blossoms just a few millimeters in diameter. "The power of nucleic acid comparisons is revealed as well as ever in this stunning deduction," says noted botanist Peter H. Raven, president...

The chimpanzee stone age

...history has deep roots! The study of our living closest relative, the chimpanzee, constantly highlights new aspects of human evolution, and a better protection of this endangered species will guarantee that we can continue uncovering new facets of our past. Relevant finds come from all parts of the Africa...

Iowa State University botanists identify new species of North American bamboo

...notes," Clark said. They already know that the closest relatives of native North American bamboos are not in Central or South America, but are in East Asia. "That's a well-known pattern of diversity in plants and animals. Plants known to be closely related that were previously found across a large ar...

Man's best friend lends insight into human evolution

... cues cooperatively we should look not just at our closest animal relatives, but also at our best animal friends. While chimps may fail to infer others' mental states when cooperating, domestic dogs do quite well at such tasks. If you point to hidden food, dogs often grasp what you are trying to tell them. P...

Researchers publish first marsupial genome sequence

...as opossums and kangaroos. "Marsupials are the closest living relatives of placental mammals. Because of this relationship, the opossum genome offers a unique lens though which to view the evolution of our own genome," said Kirstin Lindblad-Toh, Ph.D., co-director of the Broad Institute's genome sequenci...

Mice with a migraine show signs of brain damage

...ismatch between supply and demand.? Brain tissue closest to the oxygen-rich blood vessels soaks up the oxyg...idst of cortical spreading depression, brain cells closest to oxygen-rich blood vessels survive, while cells further away don’t get access to the oxygen and ar...

Lessons from the orangutans: Upright walking may have begun in the trees

...en considered a defining feature of humans and our closest ancestors. One of the most popular explanations, known as the savannah hypothesis, suggests that the ancestors to chimps, gorillas and humans descended from the trees and began walking on the ground on all fours. Over time, this four-legged gait ...

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