Service introduction
With the significant reduction in the cost of high-throughput sequencing and the significant improvement in sequencing efficiency, whole-genome resequencing has become a common method for finding variants. Resequencing is the full-genome sequencing of different individuals or different tissues of a species with a known genome. By comparing with the reference genome, the sequence information of the individual genome can be obtained, and the various variant information with the reference genome, such as SNP, InDel, SV, and CNV, can be obtained. This is of great significance for obtaining the pathogenic genes of genetic variation, understanding population genetics, the evolutionary process of species, and natural selection.
Technical procedures
The genomic DNA is randomly fragmented by physical methods, and then recovered according to the fragment size required for library construction. The small-fragment sequencing library is constructed using the standard Illumina library construction process, and sequencing is performed in the 150PE mode. The overall sequencing depth is 30×, but the sequencing depth can be adjusted according to different experimental sequencing requirements.
Bioinformatics analysis
Sample requirements
實(shí)驗(yàn)類型 | DNA樣品總量 | 樣品濃度和純度 | 樣品保存 | 樣品選擇 |
動植物基因組重測序 | ≥1 μg | 樣品濃度 >50 ng/μl,OD260/280 介于 1.8-2.0 之間,無肉眼可見雜質(zhì)污染,基因組完整、無降解,電泳中 DNA 主帶應(yīng)大于 23 kb | 請選擇干粉、酒精、TE 或超純水的保存方式 | 對于植物樣品建議選取黑暗培養(yǎng)的黃化苗或嫩苗,動物樣品應(yīng)選擇肌肉、血等脂肪含量較少的組織進(jìn)行取樣 |