The splice variants option in the left menu provides a great deal of information on exons in each transcript for your gene of interest.
Click on the Splice Variants option in the left menu.
Note: if your gene has a lot of splice variants, it may take a while to load this page. Sometimes you will retrieve an error message. Just be patient and try reloading the page by clicking on the Splice Variants option again.
Click on Transcript Comparison in the left menu
You will be asked to Select transcripts from a new option that will appear in the left menu at the bottom. Click that Select transcripts button.
In the window that opens, you can click on individual transcripts "+" sign to add them to your comparison. Or you can use the drop-down menu on the left to select by type (none, protein coding, all, etc.). In this example I'll use the menu to select all protein coding transcripts.
When you're done making your selections, click the checkmark in the upper right corner of the selection window. The view will refresh with your selections shown.
There are other ways to get individual transcript features. Toward the top of this page, if the transcript table is hidden, click the Show transcript table button.
Now select a transcript by clicking on its Transcript ID in the table. This example will use the APP-201 (ENST00000346798.7) transcipt.
You now have a linear diagram of just one transcript, and a new tab has opened at the top of the page (so you can still go back to the Gene or Location views). The menu on the left has also changed.
Transcript-based display menu
If you want to see the length of each exon, intron and UTR ends, click on the Exons link in the left menu.
You will now see the start and stop coordinates and length of each exon, intron UTR and flanking sequence. Again, sites of variation are shown with color-coded highlighting
There are more efficient ways to explore variants by gene, transcript and protein.