The phrase "and variations of a" is correct and usable in written English.
It can be used when discussing different forms or versions of a particular concept, item, or idea.
Example: "The study examined the main theory and variations of a similar hypothesis that emerged in recent research."
Alternatives: "and different forms of a" or "and alternative versions of a".
Running experiments in parallel allows for more results and variations of a given experiment.
The maximum burst rate is seven shots a second — a huge perk for sports, nature and variations of a smile.
Available in 20 styles, the bag's palette focuses on several combinations: taupe, white and black; red, tangerine and fuchsia; lemon, lime and chartreuse; and variations of a marbleization of white and black done through exotic skins (alligator, ostrich and python) and textures (Krakoff's signature felt).
Despite the wide regional variations in climate by latitude and other geographic factors, the long-term average global climate is quite stable during interglacial periods, and variations of a degree or two of average global temperature have historically had major effects on the ecological balance, and on the actual geography of the Earth.
Using an in vitro kinase assay and variations of a known Chk1 substrate peptide, Hutchins et al. identified a sequence motif for Chk1 substrate recognition consisting of a hydrophobic residue (M, I, L, or V) at position –5 and a basic residue (R or K) at position –3, relative to the phosphoacceptor site [24] (Fig. 1A).
There is more noise, firstly because of the large group size (the fluctuations and variations of a collective phenomenon increase with the number of individuals implied in the phenomenon [ 80]), but probably also due to the existence of sub-groups.
A complete understanding of the characteristics and variations of an individual delta's reservoir is required for proper well placement and reservoir management.
"Not only can Solal swing, he swings with... a sureness that allows him rhythmic variety and variation of a sort that many American jazzmen of his generation have not attempted".
Present knowledge of the mechanisms of inheritance are such that modern scientists can distinguish more satisfactorily than Darwin between non-inheritable bodily variation and variation of a genuinely inheritable kind.
In a supermarket, you have every brand and variation of a product right before your eyes.
He defines the project as "A set of experiments created with Processing that explore how iteration and variation of a 2D line can create pseudo-3D forms".
