Table 1.

Observed Locations and Frequencies for Probes ICRF10 (Carrying DNF92) and f7501 in 31 Caucasian and 6 Pygmy Individuals

Location Caucasian (62) Pygmy (12) Total (74)
DNF92 f7501 No signal DNF92 f7501 No signal DNF92 f7501 No signal
1pter 55 07 10 02 65 09
3qter0 62 00 12 00 74 0
5qter 60 11 12 00 72 11
6pter1444412915653
6qter 61 10 12 00 73 10
7pter815351613259
8pter4401881352121
9qter121436 10 11221537
11pter27[i] 28[i] 1082235[i] 30[i] 12
15qter3 58 10 12 03 70 1
16pter30593186167
16qter355405731061
17qter 62 00 12 00 74 00
19pter9[i] 56[i] 50 12 09[i] 68[i] 5

[i] Takes into account colocalization observations.

[ii] Only consistent (present in all metaphases) fluorescent signals were scored. Weak, inconstant signals were occasionally observed at 2qter and 20pter/qter with DNF92, and at 9pter and 12pter with f7501 (data not shown). Boldface numerals indicate the major (most frequent sites) for both markers. No obvious differences between the ethnic groups were noticed, aside from an apparent excess of DNF92 locations at 9qter in the Pygmy population. This may be caused by sample variations because, on the other hand, f7501 was not frequently observed at 7pter in this ethnic group, contrary to a previous report (Trask et al. 1998).