Table 1.

Joint segregation analysis of CDKN2-like polymorphism with 37 allozyme, RFLP, and pigment pattern loci informative in X. helleri × (X. maculatus Jp 163 B × X. helleri) backcross hybrids

Locus*	LG	No. of parentals	No. of recombinants	r†	χ2
ACO1	XIV	57	45	0.44	1.4
ACTBL1	V	65	19	0.23	25.2‡
ADA	I	46	44	0.49	0
ATP	III	27	44	0.62	4.1
CKM	XI	42	44	0.51	0.1
EGFR	VI	16	15	0.48	0
ES1	V	77	23	0.23	29.2‡
ES2	II	58	53	0.48	0.2
ES3	II	41	32	0.44	1.1
ES5	II	18	18	0.50	0
ES7	III	9	10	0.50	0.1
FYN	XV	32	20	0.39	2.8
GALT1	VIII	50	42	0.47	0.7
GAPD1	III	40	60	0.60	2.0
GDA	XII	30	40	0.57	1.4
GLA	XV	52	47	0.48	0.3
G6PD	I	60	42	0.41	4.8
GPI1	IV	25	25	0.50	0
IDH1	IV	33	32	0.50	0
IDH2	VII	44	52	0.54	0.7
ITP	UA	25	19	0.43	0.8
LIG1	VI	40	48	0.49	0.8
MACR	XXIV	39	63	0.62	5.7
MDH2	V	70	17	0.20	32.3‡
MPI	II	48	51	0.52	0.1
PEPS	XII	45	37	0.45	0.8
PGAM1	XI	55	39	0.42	2.7
PGAM2	VIII	42	48	0.53	0.4
PGD	I	46	45	0.50	0
PGK	XI	50	41	0.45	0.9
PGM	IX	49	50	0.50	0
PK1	IV	24	26	0.52	0.1
PVALB2	X	38	46	0.55	0.8
SRC	I	27	24	0.47	0.2
TP53	XIV	28	21	0.43	1.0
UMPK	VI	47	52	0.53	0.3
YES	VI	47	45	0.49	0

^*Gene symbols are defined in ref. 37, except ACTBL1, Xiphophorus β-actin like-1; FYN, Xiphophorus FYN; LIG1, Xiphophorus DNA ligase 1 (33); SRC, Xiphophorus SRC; TP53, Xiphophorus tumor protein p53 (34); YES, Xiphophorus YES. 

^†Recombination fraction. 

^‡Indicates χ² associated with P < 0.001.