31.   The two brothers, fraternal twins born four minutes apart, named their business Tourdates.com and started furiously phoning and faxing music labels, promoters and bands.

32.   There also seems to be a higher proportion of fraternal twins with different handedness than is the case with other siblings.

33.   There have been several cases in which fraternal twins have been found to have different fathers.

34.   They did not see an increased risk for fraternal twins, but that may be because the sample was too small.

35.   They and their fraternal twins, the Carolina Panthers, started life with extra draft picks and were unencumbered by inherited salary-cap problems.

36.   This figure comes from comparing how often autism is shared between genetically identical twins compared with fraternal twins, who are no more alike than any other siblings.

37.   Three times a week she visits her fraternal twin sister Ingrid, who lives nearby with two children of her own.

38.   This was true even for fraternal twins, which are not genetically the same.

39.   Twins and women who bore them would be less likely to survive than singletons and thus less likely to pass on a tendency to produce fraternal twins.

40.   Although they were fraternal twins, they nonetheless looked very much alike as young boys.