Sentences with phrase «complex host organisms»

First, virus may or may not be as ancient as bacteria, There is serious speculation that they may actually be better viewed as «rogue dna» that actually budded off from complex host organisms.

Not exact matches

Individual cells within a complex organism, to be sure, apparently have a shorter life - span than their host.

Intelligent Design theorists, however, take their objection to be decisive and then advance a new explanation for the existence of complex features of organisms: There is an intelligent designer who intervenes in the process of random genetic mutation and natural selection to cause, simultaneously, a host of genetic mutations needed to produce the observed complex features of organisms.

Viruses, being dependent on these organisms to host them, are viewed as evolutionary latecomers: genomic scraps that fell out onto the floor back when life was assembling itself into more complex arrangements.

«When we deal with environmental or host - associated organisms that live within complex communities — typically thousands of species or more co-occur at the same time — it is very hard to determine what an individual species or cell is up to.

Together the three organisms form a complex, co-dependent web; the nested bacteria complement each other and their insect host, creating a genetic patchwork of enzymes needed to produce amino acids lacking in the mealybugs» sap diet.

The assay we present here provides a perfect model to begin to fill these gaps and should lead to a better understanding of host - pathogen interactions in the complex setting of a multicellular organism.