The part of introns are determined to Others when transcript have the spliced UTR features.

[a92932000]

The part of introns are determined to "Others" when transcript have the spliced UTR features on jbrowse-1.15.3-release.

for example on volvox : EDEN.3 ctgA 1501-2999 is determined to Others

gff-version 3

sequence-region ctgA 1 50001

ctgA example gene 1050 9000 . + . _Load_id=EDEN;Name=EDEN;Note=protein kinase;ID=1 ctgA example mRNA 1050 9000 . + . _Load_id=EDEN.1;Name=EDEN.1;Note=Eden splice form 1;Parent=1;ID=2 ctgA example three_prime_UTR 7609 9000 . + . Parent=2 ctgA example CDS 5000 5500 . + 0 Parent=2 ctgA example five_prime_UTR 1050 1200 . + . Parent=2 ctgA example CDS 7000 7608 . + 0 Parent=2 ctgA example CDS 1201 1500 . + 0 Parent=2 ctgA example CDS 3000 3902 . + 0 Parent=2 ctgA example mRNA 1050 9000 . + . _Load_id=EDEN.2;Name=EDEN.2;Note=Eden splice form 2;Parent=1;ID=3 ctgA example CDS 5000 5500 . + 0 Parent=3 ctgA example CDS 7000 7608 . + 0 Parent=3 ctgA example five_prime_UTR 1050 1200 . + . Parent=3 ctgA example CDS 1201 1500 . + 0 Parent=3 ctgA example three_prime_UTR 7609 9000 . + . Parent=3 ctgA example mRNA 1300 9000 . + . _Load_id=EDEN.3;Name=EDEN.3;Note=Eden splice form 3;Parent=1;ID=4 ctgA example CDS 3301 3902 . + 0 Parent=4 ctgA example CDS 7000 7600 . + 1 Parent=4 ctgA example CDS 5000 5500 . + 1 Parent=4 ctgA example five_prime_UTR 3000 3300 . + . Parent=4 ctgA example five_prime_UTR 1300 1500 . + . Parent=4 ctgA example three_prime_UTR 7601 9000 . + . Parent=4