Transformation is one of three basic mechanisms for genetic exchange in bacteria. Transformation may be either a natural process—that is, one that has evolved in certain bacteria—or it may be an artificial process whereby the recipient...

A transformation is a one-to-one function that maps a set of points onto another set of points. The "points" mentioned here may be one-dimensional points on the real number line, two-dimensional points in the plane, three-dimensional points in...

Transformation is a process in which exogenous DNA is taken up by a (recipient) cell, sphaeroplast, or protoplast. In order to take up DNA, the cells must be competent. Competence is a state of bacterial cells during which the usually rigid cell wall...

In molecular biology, transformation is the genetic alteration of a cell resulting from the uptake and expression of foreign genetic material (DNA). Separate terms are used for genetic alterations resulting from introduction of DNA by viruses...

SUMMARY Transfer of genes from heterologous species provides the means of selectively introducing new traits into crop plants and expanding the gene pool beyond what has been available to traditional breeding systems. With the recent advances in genetic engineering of plants, it is...

SUMMARY Genetic transformation provides the means for modifying single horticultural traits in perennial plant cultivars without altering their phenotype. This capability is particularly valuable for perennial plants and tree species in which development of new cultivars is often hampered by their long generation...

CHICAGO–Barack Obama got out of the car a block early so everyone would see him walk to the picket line. With a gray BlackBerry holstered between black pants and white dress shirt, the candidate immediately inserted himself into the rotating loop of striking hotel workers...

"No sacrifice, no victory".  That's the motto of the Witwicky clan and it is carried out with gusto by every good guy in this popcorn blockbuster, including the very tall, robotic ones. In Transformers, Shia LaBeouf plays Sam Witwicky, a teen who would love to...