News tagged with molecular evidence
Seed size is controlled by maternally produced small RNAs: research
Seed size is controlled by small RNA molecules inherited from a plant's mother, a discovery from scientists at The University of Texas at Austin that has implications for agriculture and understanding plant ...
Apr 11, 2012 |
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Namibia sponge fossils are world's first animals: study
Scientists digging in a Namibian national park have uncovered sponge-like fossils they say are the first animals, a discovery that would push the emergence of animal life back millions of years.
Other Sciences / Archaeology & Fossils
Feb 06, 2012 |
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Research team finds new explanation for Cambrian explosion
(PhysOrg.com) -- For hundreds of years, researchers from many branches of science have sought to explain the veritable explosion in diversity in animal organisms that started approximately 541 million years ...
Space & Earth / Earth Sciences
Nov 29, 2011 |
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Researchers model genome copying-collating steps during cell division
Researchers from Virginia Tech and Oxford University have proposed a novel molecular mechanism for the living cell's remarkable ability to detect the alignment of replicated chromosomes on the mitotic spindle in the final ...
May 23, 2011 |
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New genetic study helps to solve Darwin's mystery about the ancient evolution of flowering plants
(PhysOrg.com) -- The evolution and diversification of the more than 300,000 living species of flowering plants may have been "jump started" much earlier than previously calculated, a new study indicates. According ...
Apr 10, 2011 |
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The cryptic African wolf: Canis aureus lupaster is not a golden jackal
New molecular evidence reveals a new species of grey wolf living in Africa. Formerly confused with golden jackals, and thought to be an Egyptian subspecies of jackal, the new African wolf shows that members of the grey wolf ...
Jan 26, 2011 |
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Bird molecules challenge to Moa's Ark theory
(PhysOrg.com) -- The so-called "Moa's Ark" theory - that New Zealand's animal and plant life has evolved largely untouched over 80 million years since the Gondwana supercontinent broke up - is being challenged ...
May 04, 2010 |
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Ancient penguin DNA raises doubts about accuracy of genetic dating techniques
Penguins that died 44,000 years ago in Antarctica have provided extraordinary frozen DNA samples that challenge the accuracy of traditional genetic aging measurements, and suggest those approaches have been ...
Nov 10, 2009 |
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Nanotube risk assessment
Italian scientists suggest that we need a much more detailed toxicological approach to hazard assessment before judgement regarding the long-term safety of carbon nanotubes can be made. They outline their results in the International Jo ...
Nanotechnology / Bio & Medicine
Sep 18, 2009 |
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Researchers identify genes that cause melanoma
Scientists from the Queensland Institute of Medical Research (QIMR) have found two new genes that together double a person's risk of developing melanoma.
Jul 06, 2009 |
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100 reasons to change the way we think about genetics
For years, genes have been considered the one and only way biological traits could be passed down through generations of organisms. Not anymore.
May 18, 2009 |
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Darwin's Tree of Life May Be More Like a Thicket
(PhysOrg.com) -- In On The Origin of Species, Darwin used the image of a tree of life to illustrate how species evolve, one from another. Even today, branches sprouting from lower branches (representing ancest ...
Biology /
Jan 27, 2009 |
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First Americans arrived as 2 separate migrations, according to new genetic evidence
The first people to arrive in America traveled as at least two separate groups to arrive in their new home at about the same time, according to new genetic evidence published online on January 8th in Current Biology, a Cell ...
Biology /
Jan 08, 2009 |
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