News tagged with closely related
African thicket rat malaria linked to virulent human form
Biology /
Dec 22, 2008 |
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Even though the most deadly form of malaria for humans, Plasmodium falciparum, has been linked to malaria found in chimpanzees, this group has been fairly isolated on the malarial family tree—until now. A ...
'Orphan' genes play an important role in evolution
Biology /
Nov 18, 2008 |
4.7 / 5 (3) |
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Closely related animal species share most of their genes and look almost identical. However, minor morphological differences allow us to tell them apart. What is the genetic basis for these differences? Often, the explanation ...
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Seeing without looking
Medicine & Health / Neuroscience
Dec 28, 2009 |
4.6 / 5 (13) |
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Like a spotlight that illuminates an otherwise dark scene, attention brings to mind specific details of our environment while shutting others out. A new study by researchers at the Salk Institute for Biological ...
Seeing how evolutionary mechanisms yield biological diversity
Dec 22, 2009 |
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An international team of scientists has discovered how changes in both gene expression and gene sequence led to the diversity of visual systems in African cichlid fish.
Is nicotinamide overload a trigger for type 2 diabetes?
Dec 22, 2009 |
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Facing the increasing prevalence of type 2 diabetes worldwide in the past few decades, one may ask what is wrong with humans. Geneticists tell us that the human genome has not changed markedly in such a short time. Therefore, ...
Genetic study clarifies African and African-American ancestry
Dec 21, 2009 |
4.8 / 5 (11) |
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People who identify as African-American may be as little as 1 percent West African or as much as 99 percent, just one finding of a large-scale, genome-wide study of African and African-American ancestry released ...
Loud and lazy but didn't chew gum: Ancient koalas
Other Sciences / Archaeology & Fossils
Dec 19, 2009 |
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(PhysOrg.com) -- Skull fragments of prehistoric koalas from the Riversleigh rainforests of millions of year ago suggest they shared the modern koala's "lazy" lifestyle and ability to produce loud "bellowing" ...
Talking aloud helps solve mathematical problems more quickly, according to a study
Medicine & Health / Psychology & Psychiatry
Dec 18, 2009 |
3.5 / 5 (2) |
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Those students who think aloud while solving a mathematical problem can solve it faster and have more possibilities of finding the right solution that those who do not do it. Likewise, drawing or making a pictorial representation ...
Why newborn babies can't walk
Medicine & Health / Neuroscience
Dec 18, 2009 |
4.2 / 5 (13) |
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(PhysOrg.com) -- The first steps of an infant is a real milestone in the development of all mammals including humans, but little is known about why some animals can walk soon after birth, while others need ...
Study reveals lack of diversity in embryonic stem cell lines
Dec 16, 2009 |
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The most widely used human embryonic stem cell lines lack genetic diversity, a finding that raises social justice questions that must be addressed to ensure that all sectors of society benefit from stem cell advances, according ...
World's first skeletal mount of Paluxysaurus jonesi reveals new biology
Other Sciences / Archaeology & Fossils
Dec 15, 2009 |
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(PhysOrg.com) -- The Early Cretaceous sauropod Paluxysaurus jonesi weighed 20 tons, was 60 feet long and had a neck 26 feet long, according to scientists who prepared the world's first full skeletal mount ...
Species distribution models are of only limited value for predicting future mammal distributions
Dec 15, 2009 |
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Species distribution models are of only limited use in predicting the future distribution of mammals. This is the finding of a study of the climate niches of 140 indigenous European mammals.
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