Hi, My name is Kenneth.
I found that mm10.p4 and mm10 the total length of sequence is different in websites. (NCBI, Ensembl ..)
Total length: 2,803,568,840
Ungapped length: 2,724,212,084
Total length: 2,793,712,140
Ungapped length: 2,714,420,385
I downloaded the FASTA files and counted ACTGN bases, resulted in the number of Nucleotides are same between mm10.p4 and mm10.
But why the "Total length", "Ungapped length" are different between mm10.p4 and mm10?