Hello Yasmine, you can do it by Snip (Windows key + shift + S) and paste the snip into the paint or canva for modification then save the photo. Or you can use the print option on the upper right of SnapGene application and use the same process for SNPs highlighting. (Hint: uncheck the "Description box" for a wider view of your sequence in SnapGene. Best regards

If you takes a screenshot of the SnapGene view, as described by Ibrahim H M Abualghusein above, you will have a graphic image, rather than file where you can edit the text GTACCTTA in the figure. You might want to consider using a graphic image editor (PowerPoint, Adobe Illustrator, biorender.com, etc) where you can change the fonts and so on to add to the figure more easily. For example you could make the codon of interest bold and red font so it stands out. Also, the screen shot will be at some fixed resolution and size, whereas in a graphics editor you will have more choices of export formats (JPG, TIFF, PNG, PDF etc) and resolution so the image can be made larger or smaller to fit in the journal without the details getting fuzzy during enlargement or reduction in size or resolution.

Thank you Dr. Brian Thomas Foley for your answer. It is for sure helpful for me. I use Biorender as medical and molecular figures generator. But it is insightful from you to use it as Genomic figures edition.