TABLE 2

Fixed length differences between D. melanogaster and D. simulans

Longer in D. melanogasterLonger in D. simulans
Genomic regionTotalIntronsIntergenicCodingTotalIntronsIntergenicCoding
Adh 31202110
cec 1901909090
Ci 00001100
α-Est4 9090160160
Est-6 10010000
hsp83 20202020
Lcp-Psi 40405050
Mst26Aa/Ab 60242011
per 42012020
Pgd 186120144100
Pgi 44001100
prune 10102110
Ref(2)p 65102200
run 22001100
Sod 42203300
tra 21010000
Ver 11010000
white 424110161330
yp2 11000000
zeste 10013003
Total130665598127504

Genomic regions ase, boss, Tpi, MlcI, rh3, and Zw do not show any fixed difference between D. melanogaster and D. simulans. See Table 1 for the number of alleles studied in each region and materials and methods for details.