Tag Archives: changes

South Africa: Low Levels of Genetic Diversity Are Putting Great White Sharks At Risk

… easier it is for a species to survive diseases or unexpected changes in the environment. Among genetically different individuals there will always be those able to adapt and contribute to the next generation. A different scenario emerges when all the individuals share the same genetic information since depression by inbreeding and the loss of ability to adjust to environmental changes can quickly lead a species to extinction. To continue reading this article, please click on the link below: …

Big animals’ extinction forever alters environment, study shows

… them,according to a joint report by UC Berkeley, Stanford University, California State University Sacramento and the University of Chile. “Ecological studies have shown that if you pull out a top predator or a key herbivore today, you get dramatic change in the ecosystem,” said Anthony Barnosky, a UC Berkeley professor of integrative biology and the study leader. “Our study makes it clear that in the past, such changes have lasted for thousands of years. These extinctions really do …

A cray-active solution for cancer research

… causes, which makes the marbled crayfish an interesting model for cancer research. Frank Lyko, scientist at the German Cancer Research Center (DKFZ) in Heidelberg has a keen interest in epigenetics. Unlike genetics where a fault in the genetic makeup will cause a gene to deliver the wrong product, occur multiple times or be missing completely, epigenetics is concerned with tiny changes in the genetic material which cause a gene to be more or less active. This is crucial for organisms to adapt to …

Woolly mammoth skin’s living cells could help bring the beast back to life 

… be one of the last refuges of the ice age creatures before they were eventually wiped out. Although palaeontologists still do not fully understand what caused the animals, which dominated the northern hemisphere for nearly 350,000 years, to become extinct, it is thought a combination of human hunting and changes to the climate played a major role. Speaking to The Siberian Times, Dr Grigoryev, director of the Mammoth Museum at the North-Eastern Federal University in Yakutsk, said the Lyakhovsky …