There are two distinctive characteristics in the aphid life cycle: first, seasonal alternation of food plants involving a primary host (typically a perennial) during the winter and a secondary host (an annual) during the summer; second, there is alternation between sexual and asexual cycles, with eggs resulting from sexual mating and living young, usually females, being produced asexually.
There is alternation of granular or sandy zone and clay beds associated with calcareous concretions known as 'Kankar'Kankar
In Prebaikalia, tundra-steppe (non-analog) faunas appeared and were dominant through the Late Pleistocene, although there was alternation of faunas indicative of colder and warmer (interglacial) conditions.
There were alternation of expression of 103 genes in cell cycle pathway, in which 75 genes were up-regulated, and 28 genes were down-regulated (Figure 5).
Since most metabolic pathways of storage reserve biosynthesis are branched, and there are alternation routes, futile cycles, and product turnover in developing seeds, the molecular mechanisms determining the differential partitioning of seed reserves into the major storage components remain largely unknown [ 26].
There are alternations of maritime and alluvial sediments occurring in the Po Valley, at the Adriatic's north-west coast, and as far west as Piacenza, dating to the Pleistocene as the sea advanced and receded over the valley.
There are alternations of the letters, such as script, and different handwriting.
Here, there is no alternation of colors, but there is still alternation in grating direction.
In the lycophytes, as in other vascular plants, there is an alternation of generations between a small, sex-cell-producing phase (gametophyte) and a conspicuous, spore-producing phase (sporophyte).
There is no alternation between perspectives, no intertwinement of accounts, just this single divorce of voices.
Generally speaking there is an alternation of closer and more-distant amino acids along the sequence of the peptide.
