Tag: "belly" at biology news

Scientists discover that three overlapping signals in embryo help get the backbone right

...down the right path. The formation of the back and belly is a milestone for frogs as well as for humans and...t injecting one of these factors, noggin, into the belly of an embryo caused surrounding tissues to develop into structures normally found on the back. Despi...

To sea or not to sea: When it comes to salmon sex, size sometimes doesn't matter

...and Trout." Just picture that tiny male under the belly of a 20-pound adult female that's returned to spawn, Quinn says. He's almost as likely to be a "winner" as the full-size males that are releasing their sperm in a competitive frenzy as the female deposits her eggs. And the tiny male has avoided the ...

A New Species of Monkey is Discovered in Tanzania: The First in Africa for More Than 20 Years

...n its head, elongated cheek whiskers, an off-white belly and tail, and an unusual call, termed a 'honk-bark' by the authors. The monkeys occur as high as 8,000 ft (2450 m) where temperatures frequently drop below freezing; its long coat is probably an adaptation to the cold. The taxonomic name of the spec...

Looks matter to female barn swallows

...ooks -- the reddish color of the males' breast and belly feathers. If the male's red breast is not as dark...ents. She either painted their throats, breast and belly feathers with a red marker to enhance their feathers to match the darkest -- and most attractive -- ...

Scientists describe new African monkey genus ?first in 83 years

...edium grayish brown fur, with off-white fur on the belly and the end of their long, mainly curled-up tail. They have a "crown" made up of a very broad crest of long, erect hair. Adults make a distinctive, loud, low-pitched honk-bark. An omnivore, Kipunji eat leaves, shoots, flowers, bark, fruit, lichen, mo...

The origin of the brain lies in a worm

...-ladder-like chain of nerve cell clusters on their belly side. Other invertebrates on the other hand have their nerve cells distributed diffusely over their body. Yet, all these species descend from a common ancestor called Urbilateria. If this ancestor already possessed a nervous system, what it might hav...

Phthalates now linked to fat, related health risks

... since low testosterone appears to cause increased belly fat and pre-diabetes in men. They analyzed urine, ...ghest levels of phthalates in their urine had more belly fat and insulin resistance. Researchers adjusted for other factors that could influence the results,...

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