For WGS sequencing, the DNA was sheared first and then cloned into a vector, finally assembly contig and PCR gaps. 1: I found clone is used in shotgun method. So cloned based sequencing method is a part of shotgun sequencing or a separate method? Are they supplement each other or independent method?
2: In shotgun sequencing, after cloning, DNA is sequenced and show overlaps .But how exactly the DNA is sequenced within vector?