Table 7. Chi-square values and probabilities of fitness for expected and observed values in progenies which produced by crossing of early-feathering chickens (EF) and late-feathering chickens (LF)

Parental mating combinations		Male progeny		Female progeny		χ2-values	P-values
		EF	LF	EF	LF
LF♂ × LF♀	Observed	3	58	21	44	4.9108	0.1785
	Expected	0	61	28	37
LF♂ × EF♀	Observed	93	0	113	0	0.0000	1.0000
	Expected	93	0	113	0
LF♂ × EF♀	Observed	19	60	32	30	7.6982	0.0527
	Expected	35	44	27	35
EF♂ × LF♀	Observed	2	74	64	0	2.0267	0.3630
	Expected	0	76	64	0