The phrase "a straightforward variant" is correct and usable in written English.
It can be used to describe a version or form of something that is simple and easy to understand or implement.
Example: "This is a straightforward variant of the original recipe that anyone can follow."
Alternatives: "a simple alternative" or "an uncomplicated version".
The CMP algorithm and its orthogonalized version (OCMP) [5, 6] are rather straightforward variants of the standard algorithms.
In order to address these bias issues in a straightforward way, we introduce a variant of MI known as ZNMI (see "Methods" and Figure 1).
As an example, targeted genomic enrichment approaches with NGS enable deep sequencing of any complex genomic region of interest, and may be a straightforward means of detecting causal variants in common diseases, capable of contributing to understanding of their pathogenesis.
When dealing with greater variability in variant service interfaces, a straightforward consensus voting mechanism may not suffice.
The minigene system is a straightforward and robust approach to detect variants with an impact on splicing and contributes to a better knowledge of this gene expression step.
AC is also relatively simple but requires the fast variant from [35] since a straightforward school book or Matlab implementations would be an order of magnitude slower.
Nowadays, the extensive use of different high-throughput methodologies allows the obtention of different measurements for the genes such as methylation status, splicing variants, linkage to diseases, etc., in a straightforward manner.
A straightforward extension will be the cloning of major-effect genetic variants in crop species.
The interactions between the --SEA and other variants mean that the spread of this allele is not a straightforward case of balancing selection.
Then the simplified time variant linear model is considered and the discrete-time model is derived in a straightforward manner.
