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Tag: "evolutionary" at medical news

Visualization Found To Be Largely Dependent On The Brain

...ul design. 'Our ability to see is one of the great evolutionary accomplishments of the human brain. We still don't know how the visual system accomplishes this marvel of information processing. Such experiments are beginning to reveal how large networks of neurons in the brain extract meaning from the eye image',...

Beneficial Symbiotic Relationship Between Ants And Bacteria.

...ng nutrition to the bacteria. This shows the rapid evolutionary adaptation among the ant species. More than 200 species of ants display this complex symbiotic relationship. It is found that the antis more inclined to develop the symbiotic relationship with the bacteria rather that use the bacteria as tool in pr...

New DNA Breakthrough Can Change Future Of Medicine

...are groups of DNA that have traveled together over evolutionary time and any difference in these haplotypes between individual races can now help in pinpointing the genetic variations that affect an individual patient's response to drugs, toxic substances and food . More than one million of these single-letter ...

Fluorescent markers to distinguish Trypanosoma brucei strains causing Sleeping Sickness

...ific interest to researches addressing ecological, evolutionary and epidemiological questions using trypanosomes as an experimental system....

Sex Played A Vital Role For Evolution Of Infectious Diseases

...y. Sex within the same mating-type may confer an evolutionary advantage when the opposite mating type is unavailable, Heitman said. Other human pathogens or parasites may harbor cryptic same-sex cycles that contribute to produce progeny with altered virulence, geographic or host range or other advantageous char...

Evoprinter, a multigenomic comparative tool for rapid identification of functionally important DNA

...inter that facilitates the rapid identification of evolutionary conserved sequences within the context of a single...erence DNA. By superimposing the different species evolutionary histories, the combined mutagenic force reveals DNA sequences that are essential for gene expression...

Human Brain Continues To Evolve And Grow

...es," added Lahn. The scientists looked at the evolutionary history of two genes -- microcephalin and abnormal spindle-like microcephaly-associated (ASPM) -- which appear to regulate brain size. Over thousands of years, both genes seem to be generating new and improved versions of themselves and this benefici...

Dog DNA reveals man's link with best friend

...d structure," said researchers. "But if you do the evolutionary tree, we are on the same linage as the mouse. The mouse is evolving at a much faster rate." Researchers achieved what is called 1.5 X coverage of the dog genome. This means many DNA fragments remain and the results are less accurate than the compl...

Dog DNA reveals man's link with best friend

...d structure," said researchers. "But if you do the evolutionary tree, we are on the same linage as the mouse. The mouse is evolving at a much faster rate." Researchers achieved what is called 1.5 X coverage of the dog genome. This means many DNA fragments remain and the results are less accurate than the compl...

Y chromosome uses trick to repair its own genes

...at apparently helps keep it from rotting away over evolutionary time. The Y chromosome, of course, is best known for supplying the biological signal that makes males rather than females. Some scientists have suggested it might disappear millions of years from now because it can't eliminate genetic defects in the...

Fossil teeth and human development

...ars for primates — came about more recently in the evolutionary process than previously thought. "Dental developme...100,000 years ago. Previous theories placed this evolutionary milestone as far back as 1.5 million years ago, corresponding with the first evidence of modern huma...

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