ScienceDaily: Top Science News |
- When it comes to mammals, how big is too big?
- Mapping translation sites in the human genome
- Global cooling as significant as global warming, study of marine ecosystems during Cretaceous period shows
| When it comes to mammals, how big is too big? Posted: 16 Jun 2013 06:07 PM PDT Mammals vary enormously in size, from weighing less than a penny to measuring more than three school buses in length. Some groups of mammals have become very large, such as elephants and whales, while others have always been small, like primates. A new theory provides an explanation for why and how certain groups of organisms are able to evolve gigantic sizes, whereas others are not.  |
| Mapping translation sites in the human genome Posted: 16 Jun 2013 12:52 PM PDT Scientists have produced the first genome-wide investigation of cap-independent translation, identifying thousands of mRNA sequences that act as Translation Enhancing Elements, which are RNA sequences upstream of the coding region that help recruit the ribosome to the translation start site.  |
| Posted: 16 Jun 2013 12:52 PM PDT An international study confirms the link between global cooling and a crash in the marine ecosystem similar to that witnessed as a result of global warming.  |
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