Genetic analysis of the human infective trypanosome Trypanosoma brucei gambiense: chromosomal segregation, crossing over, and the construction of a genetic map

Table 1 Characteristics of the genetic linkage maps of Trypanosoma brucei gambiense

Chromosome	Number of markers	Genetic length (cM)^a	Physical size (Mb)^b	Recombination Frequency (kb/cM)	Average number of crossover events/meiosis
1	10	51.20	0.74	14.53	0.46
2	10	47.60	0.74	15.46	0.42
3	10	46.90	1.25	26.74	0.42
4	12	54.40	1.05	19.30	0.50
5	7	90.60	1.20	13.29	0.74
6	9	42.40	0.94	22.13	0.35
7	7	46.90	1.65	35.08	0.40
8	11	115.60	2.30	19.88	0.95
9	10	73.10	2.10	28.67	0.65
10^c	12	76.10	2.50	32.85	1.08
11	21	88.30	3.42	38.76	0.71
Average				24.40	0.61
Total	119	733.10	17.89

^aTotal genetic length was calculated by the addition of recombination units between each marker. ^bPhysical distances were calculated from the T. b. brucei genome sequence [25]. ^cChromosome 10 is a combination of two linkage groups.

ISSN: 1474-760X