The phrase "mutations occurred in" is correct and usable in written English.
For example, you might use the phrase in the following sentence: "Scientists observed that mutations occurred in the gene pool over the course of several generations."
To uncover multiple mutations occurred in minority of EGFR-mutated cells, which may be covered by the noises from majority of un-mutated cells, is currently becoming an urgent clinical requirement.
After insertion of the tetM determinant, several mutations occurred in one of the Zeta toxin/Epsilon antitoxin systems, generating mutated Zeta toxin and Epsilon antitoxin proteins.
The mutations occurred in one-half of 1 percent of the general population but in 1 to 2 percent of patients with Alzheimer's disease.
KRAS mutations occurred in 32%% of patients (11/34).
Later, two mutations occurred in the GR receptor that made it insensitive to aldosterone.
Most of the identified mutations occurred in several independently evolved viruses, demonstrating parallel evolution.
Two such mutations occurred in seasonal H1N1 shortly before the widespread appearance of H274Y.
This high frequency of mutations could, however, impede our antibody identification if mutations occurred in PCR primer-binding sites.
EGFR mutations occurred in 10% to 20% of NSCLC patients (Riely and Yu, 2015), so further exploration of EGFR as therapeutic target is highly valuable.
Majority of the mutations including nonsense and frame-shift mutations clearly disrupt LATS1/2 function; 2) Some mutations occurred in regions and residues important for LATS1/2 activation.
No specific mutations occurred in all nsp2 deletion mutant genomes that were not also seen in the parent genome of Type 2 PRRSV strain VR-2332.
