Y chromosomes often degenerate via the accumulation of pseudogenes and transposable elements. By contrast, little is known about X-chromosome degeneration. Here we compare the pseudogenization process between genes on the neo-sex chromosomes in Drosophila miranda and their autosomal orthologues in closely related species. The pseudogenization rate on the neo-X is much lower than the rate on the...

Islamic Art is the art of civilization based on Islamic religion. Moreover, it not only concerned with particular region or particular people rather it is a combination of different civilizations and historical circumstances as painted with Islamic weltanschauung. The Arab civilization is probably more important. Although the Arabs have little art and even then, they developed Islamic art with ...

Rhodopsin is formed by the condensation of opsin with a cis isomer of retinene, called neo-b. The bleaching of rhodopsin releases all-trans retinene which must be isomerized back to neo-b in order for rhodopsin to regenerate. Both retinene isomers are in equilibrium with the corresponding isomers of vitamin A, through the alcohol dehydrogenase system. An enzyme is found in cattle retinas and fr...

This study evaluates the validity of derived measures of the psychopathic personality traits of Fearless Dominance and Impulsive Antisociality from the NEO Personality Inventory-Revised (NEO-PI-R; Costa & McCrae, 1992) using data from the Collaborative Longitudinal Personality Disorders Study (baseline N = 733). These 3 issues were examined: (a) the stability of the measures over a 10-year inte...

PURPOSE: Creating patient-specific replacement organs promises to address shortcomings in transplantation, including the need for immunosuppression and limited donor supply. A major roadblock to tissue engineering is the inability to synthesize an intact circulatory system de novo. Thus, tissues produced by the current paradigm of seeding cellular scaffolds are rendered critically ischemic by t...

Hepatoma cells were infected with replication-incompetent murine retroviruses containing the selectable gene for amino-3'-glycosyl phosphotransferase (neo) and/or the nonselectable gene for bovine growth hormone (bGH). Expression of these genes was controlled by the promoter regulatory region of the gene for the cytosolic form of phosphoenolpyruvate carboxykinase (GTP) (EC 4.1.1.32) (PEPCK) fro...

the present article discusses about the us security policy after the incident of 11 september 2001, with reference to the middle east, in general and iran in particular. the author focuses the design of current us administration and its endeavor to capture some of the strategic places in the name of terrorism and as a savior of democracy such as in afghanistan and iraq, although those designs h...