The phrase "a relatively minor effect" is correct and usable in written English.
It can be used when discussing the impact or influence of something that is not significant in comparison to other factors.
Example: "The new policy had a relatively minor effect on overall productivity, as most employees adapted quickly to the changes."
Alternatives: "a somewhat insignificant impact" or "a fairly small effect".
In this context, the legal requirements of the Voting Rights Act might also have a relatively minor effect on the number of majority-minority districts, most of which arise as a result of the geographic distribution of minority voters.
The number of name interpreters had a relatively minor effect.
In contrast, the coefficient of friction has a relatively minor effect.
Landscape attributes had a relatively minor effect on site occupancy in our study area.
Compared to the NaOH content, the reaction temperature and time has a relatively minor effect on the products.
Provided the moisture-retention layer of the CCBE remains close to saturation, its thickness had a relatively minor effect.
Another explanation for the lower ORs of WHR and VAT in women might be the importance of unmeasured or unknown risk factors such as hormonal status or genetic effects, overshadowing a possible relatively minor effect of visceral fat.
Alternatively, there may be a large number of QTL of relatively minor effect that were not detectable with the scale and resolution of this study.
We found that, as reported previously [ 16], OTVs located within the first 3 bp of either the 5' or 3' end of a target sequence (edge OTVs) had relatively minor effect on hybridization intensity.
OsNRAMP5 not only mediates Cd uptake, but also manganese (Mn) uptake and relatively minor effect on Fe uptake under Fe starvation (Ishimaru et al. 2012) (Table 1).
Measurements indicate up to 2.5X improvement in thermal conductivity of activated GPE membranes, with relatively minor effect on electrochemical performance of GPE-based single-layer cells.
