- alien nucleic acid
-
Any nucleic acid composed of bases other than adenine, guanine, thymine, uracil and cytosine and/or sugars other than ribose and deoxyribose, that could form a basis of extraterrestrial carbon-based life
Wikipedia foundation.
alien nucleic acid
Look at other dictionaries:
DNA — For a non technical introduction to the topic, see Introduction to genetics. For other uses, see DNA (disambiguation). The structure of the DNA double helix. The atoms in the structure are colour coded by element and the detailed structure of two … Wikipedia
evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… … Universalium
Alternative biochemistry — is the speculative biochemistry of alien life forms that differ radically from those on Earth. It includes biochemistries that use elements other than carbon to construct primary cellular structures and/or use solvents besides water. Theories… … Wikipedia
Hypothetical types of biochemistry — are forms of biochemistry speculated to be scientifically viable but not proven to exist at this time. While the kinds of living beings we know on earth commonly use carbon for basic structural and metabolic functions, water as a solvent and DNA… … Wikipedia
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
Evolutionary history of life — Although evidence of early life is scarce and often difficult to interpret, it appears that life appeared on Earth relatively soon (on the geologic time scale) after the planet had cooled enough for liquid water to be present. The dominant theory … Wikipedia
Gene therapy — using an Adenovirus vector. A new gene is inserted into an adenovirull. If the treatment is successful, the new gene will make a functional protein. Gene therapy is the insertion, alteration, or removal of genes within an individual s cells and… … Wikipedia
Nobel Prizes — ▪ 2009 Introduction Prize for Peace The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… … Universalium
Double helix (disambiguation) — In geometry, a double helix (plural double helices) is a pair of congruent geometrical helices with the same axis, differing by a translation along the axis. The term is most often used in reference to the nucleic acid double helix, the dominant… … Wikipedia
Historia evolutiva de la vida — Esta página o sección está siendo traducida del idioma inglés a partir del artículo Evolutionary history of life, razón por la cual puede haber lagunas de contenidos, errores sintácticos o escritos sin traducir. Puedes colaborar con… … Wikipedia Español
