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22 Sep 09

Positions of Genes Inside the Cell Nucleus Exert Biological Effects: Scientific American

the structure of nuclear components—chromosomes, RNA, protein complexes and other small bodies—could be as biologically important as the components themselves.

www.scientificamerican.com/article.cfm - Preview

cell biology DNA RNA

29 Jul 09

A Patchwork Mind: How Your Parents' Genes Shape Your Brain

We each have two parents, but their genetic contributions to what makes us us are uneven. New research shows we are an amalgam of influences from Mom and Dad : Scientific American

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genetics DNA biology

genes from Mom and Dad do not always exert the same level of influence on the developing fetus
imprinted genes
4 more annotations...
- Imprinting is an epigenetic (meaning “beyond genetic”) mechanism, a molecular change that can happen within a cell that affects the degree to which genes are activated, without changing the underlying genetic code.
- Genes are imprinted by the addition of molecules called methyl groups to the gene’s DNA
- A woman’s egg carries only the genomic imprints that her mother passed on to her; her father’s imprints are wiped away. Likewise, the genes that a man passes on in his sperm are imprinted in the same way that his father’s genes were.
- Mothers tend to silence genes that promote growth and demanding behavior, whereas fathers tend to silence genes that temper growth and demanding behavior.

Science/AAAS | Table of Contents: 10 August 2001; 293 (5532)

www.sciencemag.org/...issue5532 - Preview

epigenetics genetics DNA biology

The Evolution of Epigenetics

www.sciencemag.org/...1063.pdf - Preview

epigenetics DNA RNA biology

24 May 09

In The Prebiotic Kitchen

To explain the origin of life, scientists seek to explain the origin of its components. The three most important of these are RNA, DNA, and proteins. (The Loom | Discover Magazine)

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RNA biology prebiotic DNA life grue

30 Jun 08

Cribsheet #16: Synthetic Biology

"Synthetic biology is a field devoted to creating better tools for biological engineering, which could be used to create new biological systems. This Cribsheet summarizes the basics of biotechnology and explains how to assemble and program strands of DNA. It also charts the progress of synthetic biology toward a future of cheap, powerful, easy-to-use biotechnology tools that may be difficult to regulate or control." (Seed)

www.seedmagazine.com/...sheet_16_synthetic_biology.php - Preview

biology dna science CDC

20 May 08

Video: Gene Regulation

"In this video introduction, Perspective author John Mattick, Stephen Buratowski, and Science editor Guy Riddihough discuss the new and increasing understanding of how RNA regulates DNA, and how RNA may have been the original molecule of life. " 319 (5871): 1781b -- Science

www.sciencemag.org/...1781b - Preview

genetics dna rna science biology grue

18 Apr 08

The More We Know About Genes, the Less We Understand

Carl Zimmer's Dissection: "But scientists don't quite know why a network like the one in E. coli can handle this rewiring so well. The source of their strength lies not in a single molecule -- DNA -- but in a complicated web of relationships. The network itself is the mystery for biologists in the 21st century."

www.wired.com/...dissection_0418 - Preview

dna genes science biology

But scientists don't quite know why a network like the one in E. coli can handle this rewiring so well. The source of their strength lies not in a single molecule -- DNA -- but in a complicated web of relationships. The network itself is the mystery for biologists in the 21st century.

02 Apr 08