Abstract: Provided is a method of constructing a sequencing library. The method includes 1) providing a single-stranded DNA fragment from a biological sample; 2) subjecting the single-stranded DNA fragment to whole genomic amplification to obtain a whole genome amplification product; 3) fragmenting the whole genome amplification product using a transposase embedded with two adaptors to obtain a fragmented product with two adaptors respectively at two ends; and 4) amplifying the fragmented product with two adaptors respectively at two ends using a tag sequence and a pair of primers to obtain said sequencing library.

Abstract: Disclosed is a method for constructing a long fragment DNA library, comprising the following steps: 1) breaking a long fragment DNA into target fragments of 3-10 kb by transposase, then amplifying the target fragments, and obtaining target fragment amplification products containing dUTP; 2) amplifying the dUTP in the products by removing the target fragments, fragmenting the target fragments secondarily into DNA short fragments of 300-1200 bp; 3) connecting both ends of the DNA short fragments with sequencing linker single chains A and sequencing linker single chains B respectively; and obtaining connecting sequencing linker products; and 4) PCR amplifying the connecting sequencing linker products, to obtain amplification products.

Abstract: Provided is a method of constructing a sequencing library. The method includes 1) providing a single-stranded DNA fragment from a biological sample; 2) subjecting the single-stranded DNA fragment to whole genomic amplification to obtain a whole genome amplification product; 3) fragmenting the whole genome amplification product using a transposase embedded with two adaptors to obtain a fragmented product with two adaptors respectively at two ends; and 4) amplifying the fragmented product with two adaptors respectively at two ends using a tag sequence and a pair of primers to obtain said sequencing library.