DNA Replication: The Enzyme Party
Now let’s take a look at the movers and the shakers of DNA replication, the enzymes.
Enzymes and their functions:
- These untwist the double helix at the replication fork, breaking the hydrogen bonds between the nitrogenous bases (A, T, C, G) in…
Archaeologists discover 1,500-year-old ‘battle claws’ in ancient Peruvian tomb
The paws were found at the archaeological site of Huaca de la Luna or Temple of the Moon - a shrine located in the capital city of the Moche civilization, a Peruvian culture that flourished in South America between 100 and 800 AD.
The scientists who discovered the grave suggest that the claws might have been part of a ritual costume used in ceremonial combat, according to a report from El Comercia. Participants dressed in outfits made of animal skins and the loser was sacrificed to the gods while the winner kept the garments as a mark of distinction.
Polytopes in Geometry.
In elementary geometry, a polytope is a geometric object with flat sides, which exists in any general number of dimensions. A polygon is a polytope in two dimensions, a polyhedron in three dimensions, and so on in higher dimensions (such as a polychoron in four dimensions). Some theories further generalize the idea to include such objects as unbounded polytopes (apeirotopes and tessellations), and abstract polytopes. When referring to an n-dimensional generalization, the term n-polytope is used. For example, a polygon is a 2-polytope, a polyhedron is a 3-polytope, and a polychoron is a 4-polytope…See more : History and Different approaches to definition at Polytope on Wikipedia.Image: Polytope movie page (Hypercubes) by Komei Fukuda - A Catalog of Uniform Polytopes by Jenn - Polytope on Wikipedia& Cubic Soap by Jeff Buchbinder.
In “Universal constructors in polytopal graph theory”, a article about Polytopal graph theory, the author wrote:
Polytopal graph theory is concerned with the graphs formed by the edges and vertices of polytopes. The graph of a simple polytope contains all of the necessary information to recover its full combinatorial structure in polynomial time, and thus is equivalent in a strong sense to the object. These objects are both mathematically and aesthetically beautiful as well as practically relevant. Properties of polytopal graphs are linked with a number of important algorithmic questions about polytopes such as the complexity of linear programming and the convergence of randomized algorithms - Source.