Choose from the format dropdown and click "Create File" .
Here is a comprehensive guide on how to download these sequences from the three primary biological databases. download dna sequence in fasta format
NCBI is the most common repository for nucleotide sequences. You can find sequences for specific genes, proteins, or whole genomes. Go to the NCBI Nucleotide database. Search for your sequence (e.g., "TP53 human"). Click on the specific result to open the record page. At the top right of the page, click the "Send to" button. Select "File" as the destination. Choose from the format dropdown and click "Create File"