This potential results from large mutation and recombination rates and, in the case of multipartite genomes, the re-assortment of segments during coinfection events.
This kind of pairing and separation will produce independent assortments of chromosomal segments (including genes), no matter what the chromosomes are made of and no matter what the underlying molecular mechanisms.
The influenza viruses evolve continuously with new strains rapidly replacing the previous ones through both the accumulation of mutations within the genes coding for the surface glycoproteins hemagglutinin and neuraminidase, a phenomenon known as antigenic drift, and the re-assortment of genome segments between viruses.
Mr. Gormley said the company had created different Web pages for an assortment of different customer segments, depending on, say, how much money they had spent in the past.
The Media-Saturn segment offers assortment of brand products in consumer electronics retailing.
Antigenic drift is the frequent occurrence of point mutations resulting from defects in RNA replication mechanisms, while antigenic shift is less frequent, involving re-assortment of the RNA segments arising from exchanges between different strains in host cells infected by multiple viruses.
At the onset of a new pandemic, re-assortment of virus genome segments in a certain host (e.g. swine) and successive invasion of the new re-assortant into the human population were often essential.
She helped produce dozens of segments, including some of the first television coverage of shaken baby syndrome and of the dangers of sulfites, which are often used as food preservatives and can cause an assortment of medical problems.
The other two clusters (clusters 1.2 and 1.3) were suggested to be distinct reassortants with different types of segment assortments.
For IgH, these include combinatorial assortment of individual variable (V), diversity (D) and joining (J) gene segments, nucleotide(s) trimming in the D-J and V-DJ joining site, and, template-dependent (P-addition) and independent (N-addition) nucleotide(s) insertion at the joined junctions (Yancopoulos and Alt, 1986; Kirkham and Schroeder, 1994).
But its assortment of baked goods and snacks is one of the fastest growing segments of its portfolio, advancing at a healthy double-digit pace per year, according to Troy Alstead, Starbucks' chief financial officer.
