Final answer:
The discrepancy observed for the SF3B3 gene in the CHM13 v2 annotation GFF3 is missing gene annotation for SF3B3.
Step-by-step explanation:
The discrepancy observed for the SF3B3 gene in the CHM13 v2 annotation GFF3 is missing gene annotation for SF3B3. The CHM13 v2 annotation GFF3 does not include the gene annotation for SF3B3. This means that the information about the SF3B3 gene is not present in the annotation file.