Checking Read Quality - FASTQC | RC Learning Portal

FASTQC report showing per-base sequence quality, with most bases maintaining high quality across reads and slight drops at the read ends typical of Illumina data.

FASTQC report showing per-base sequence quality, where read quality declines toward the end, indicating potential sequencing degradation or lower confidence in base calls at later positions.

FASTQC report showing a decline in per-base sequence quality toward the end of reads, indicating significant quality drop-off and potential sequencing errors in later positions.