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Latest Polymorphism Stories

Humans, Chimps Utilize Same Genetic Variants To Fight Pathogens
2013-02-15 11:41:43

April Flowers for redOrbit.com - Your Universe Online A new genome-wide analysis, led by the University of Chicago Medical Center, searched for evidence of long-lived balancing selection - where the evolutionary process acts not to select the single best adaptation but to maintain genetic variation in a population. The study revealed at least six regions of the genome where humans and chimpanzees share the same combination of genetic variants. The results of this study have been...

Genetic Variation Helped Humans Evolve, Adapt To Climate Changes
2013-02-15 10:05:03

[Watch Video: 2 Studies Reveal Genetic Variation That Drives Human Evolution] April Flowers for redOrbit.com - Your Universe Online New light has been shed on a genetic variation that may have played a key role in human evolution by two studies published by an international group of researchers this week in the journal Cell. To understand a gene variant that might have helped humans adapt to humid climates, the research team used an animal model, along with whole-genome sequencing...

Clearer Picture On African Human Expansion Revealed
2012-10-23 14:22:42

Brett Smith for redOrbit.com - Your Universe Online One of the biggest sticking points in the scientific debate over the story of human evolution and eventual diaspora from Africa has been how it is told from two opposite sides of the scientific spectrum–the clinically-based genetics community and the field-based anthropological community. The debate has caused some sniping over the years due to conflicting theories. But now, a group of geneticists from Stanford University set out...

2012-10-13 04:02:07

The novel Natural Sciences Bibliographic Web Portal aims to provide comprehensive bibliographic information on the basic and applied life, earth and health sciences. The site has now published over 1,000,000 references and has included the two new sections Genetic and Genotype. While the publishers target to publish a total of over 21 million references until 2014, the site currently contains over 1,006,000 posts, increasing by about 10,000 items every day. References contain a minimum of...

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2012-09-06 17:18:38

Brett Smith for redOrbit.com — Your Universe Online The latest IUCN Red List registers Magellanic penguins as ℠Near Vulnerable´ from a conservation standpoint, however a group of scientists from Bowling Green State University want to see if concerns might be tempered or fueled by understanding the genetic diversity amongst the birds´ populations in South America. To measure the amount of genetic diversity in the birds, the researchers focused on the Major...

2012-08-03 01:06:24

New research explains why female cuckoos have evolved different guises To minimize the chance of being recognized and thus attacked by the birds they are trying to parasitize, female cuckoos have evolved different guises. The new research, funded by the Natural Environment Research Council, was published today, 03 August, in the journal Science. The common cuckoo (Cuculus canorus) lays its eggs in the nests of other birds. On hatching, the young cuckoo ejects the host's eggs and chicks...

2012-05-09 21:22:44

Researchers have found that bird species with multiple plumage color forms within in the same population, evolve into new species faster than those with only one color form, confirming a 60 year-old evolution theory. The global study used information from birdwatchers and geneticists accumulated over decades and was conducted by University of Melbourne scientists Dr Devi Stuart-Fox and Dr Andrew Hugall (now based at the Melbourne Museum) and is published in the journal Nature. The link...

Biologists Turn Back The Clock To Understand Evolution Of Sex Differences
2012-05-03 12:44:23

Battles of sexes shown to spur adaptive sex differences Sex differences account for some of the most of the spectacular traits in nature: the wild colors of male guppies, the plumage of peacocks, tusks on walruses and antlers on moose. Sexual conflict — the battle between males and females over mating — is thought to be a particularly potent force in driving the evolution traits that differ in males and females. However, the genetic processes responsible for producing such...

2012-02-23 10:14:09

A new study reveals a dazzling degree of biological diversity in an unexpected place — a single neural connection in the body wall of flies. The finding, reported in this week's online edition of the Proceedings of the National Academy of Sciences, raises several interesting questions about the importance of structure in the nervous system and the evolution of neural wiring. "We know almost nothing about the evolution of the nervous system, although we know it has to happen...


Latest Polymorphism Reference Libraries

Grove Snail, Cepaea nemoralis
2013-10-14 10:20:27

The Grove Snail (Cepaea nemoralis) is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk. It is one of the most common species of land snail within Europe and has been introduced to North America. C. nemoralis is the type species regarding the genus Cepaea. It is used as a model organism in citizen science projects. This snail species is among the largest due to its polymorphism and bright colors. The color of the shell is very variable, reddish, yellow,...

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Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
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