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Simple Membranes Could Have Allowed Nutrients To Pass Into Primitive Cells

21:45 04-06-2008; source: www.sciencedaily.com

Biologists have found that the sort of very simple membrane that may have been present on primitive cells can easily allow small molecules -- including the building blocks of RNA and DNA -- to pass thorough.

New Zealand's Colonization 1000 Years Later Than Previously Thought?

00:45 04-06-2008; source: www.sciencedaily.com

The dating project, in one of the largest studies of its kind, has shown that the country was not visited by humans over 2000 years ago, as some previous research suggests. The new research shows that the earliest evidence for human colonization is about 1280-1300 AD, and no earlier. They based their results on new radiocarbon dating of Pacific rat bones and rat-gnawed seeds. Their results do not support previous radiocarbon dating of Pacific rat bones which implied a much earlier human contact about 200 BC.

Men Fighting Over Women? It's Nothing New, Suggests Research

06:45 03-06-2008; source: www.sciencedaily.com

Men may usually settle it over a drunken brawl in the pub or perhaps a verbal spat -- but new evidence has shown for the first time that fighting over women in prehistoric times could have been worse than that.

Evolution Of An Imprinted Domain In Mammals

06:45 03-06-2008; source: www.sciencedaily.com

A new PLoS Biology article investigates the evolution of genomic imprinting in a specific region of the mammalian genome. The work shows that different regions became imprinted at different times during mammalian evolution.

Genetic Mutation Linked To Walking On All Fours

15:45 02-06-2008; source: www.sciencedaily.com

What are the genes implicated in upright walking of humans? The discovery of four families in which some members only walk on all fours may help us understand how humans, unlike other primates, are able to walk for long periods on only two legs.

Living Fossils Have Long- And Short-term Memory Despite Lacking Brain Structures Of Modern Cephalopods

06:45 01-06-2008; source: www.sciencedaily.com

Nautilus, the ancient living ancestors of modern cephalopods, have both long and short-term memory, despite lacking the brain structures that modern cephalopods evolved for long-term memory.