"pattern wherein" is a correct and usable phrase in written English.
You can use it when referring to a particular pattern that exhibits certain features or aspects. For example, "Recently, I have observed a pattern wherein the demand for organic produce has grown steadily."
The movement of all these plays follows a familiar comic pattern, wherein characters are brought from a condition of affected folly amounting to self-delusion to a plain recognition of who they are and what they want.
If we continue to observe a pattern wherein turnout is steady in Mr. Romney's weakest areas but poor in his stronger ones, that could put him under 35 percent of the vote, at which point it looks like he would lose to Rick Santorum.
For converging dendrites, in addition to the usually accepted overgrowth pattern wherein the favorably oriented dendrites block the unfavorably oriented ones, the opposite pattern of overgrowth observed in some recent experiments is also found in our simulations.
Besides pure IAP and EAP, many DRHs (such as the iCub hand [15]) also adopt a hybrid driven pattern, wherein multimodal sensors (tactile, position, and force) are also integrated for providing more proprioception information.
Most of the solos on Marquee Moon follow a pattern wherein Verlaine runs up a major scale but regresses slightly after each step.
Online reading has given rise to a new style of perusing, called "F-shaped pattern", wherein the eye scans an F-shape on a page to absorb the few main ideas of the article without fully engaging with any of them.
Analysis of these years consistently provided us with a clear picture of precipitation patterns (wherein negative years indicated droughts and positive years indicated above-average precipitation; see Fig. 6 and Gradel et al. 2017).
As a result of co-transcriptional splicing, variations in pol II elongation influence alternative splicing patterns, wherein a slower elongation rate is associated with increased inclusion of alternative exons within mature mRNA.
The motion of filopodia and lamellipodia seems to follow stereotyped patterns wherein the stiffness of an obstacle is first probed.
Remarkably, cyclin D1-positive tumours displayed distinct localisation patterns, wherein tumours frequently exhibited predominately cytoplasmic cyclin D1.
The imprint mark in eutherians includes germ-line derived cytosine methylation patterns wherein the two alleles exhibit opposite methylation states [ 17].
