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. 2011 Jul 25;14(1):11–18. doi: 10.2478/v10034-011-0012-5

Table 3.

Differences in prevalence of homozygous recessive traits between evaluated groups of same gender subjects

	Males			Females
HRT (χ2)	Controls/SBO	Controls/SBA	SBO/SBA	Controls/SBO	Controls/SBA	SBO/SBA
Blond hair	14.9^a	25.5^a	1.8	10.6^a	22.8^a	1.3
Straight hair	7.2^a	7.2^a	0	7.3^a	0.4	3.4
Two hair whorls	0.7	5.3^b	4.6^b	2.2	4.6^b	1.1
Opposite hair whorl orientation	21.3^a	6.4^b	27.7^a	0.5	6.3^b	2.3
Soft hair	10.8^a	1.9	2.6	1.2	14.7^a	5.7^b
Continuous hairline	0.1	15.9^a	12.9^a	2.3	3.5	12.6^a
Attached ear lobe	6.8^a	10.6^a	1.5	5.8^b	4.9^b	0.1
Ear without the Darwinian notch	4.7^b	2	1.7	0.7	2.5	1.1
Blue eyes	7.2^a	6.2^b	0	0.8	36.5^a	17.3^a
Color blindness	1.1	3.4	10.6^a	0	2	1
Right thumb over left thumb	4.6^b	0.5	2.8	0.1	7.5^a	8.8^a
Top joint of the thumb >45°	1.8	0.5	0.5	10.6^a	3	25.8^a
Proximal thumb extensibility	12.2^a	0.1	7.0^a	0.3	16.0^a	8.5^a
Left handedness	0	0.1	0.1	13.4^a	14.9^a	0
Index finger longer than the ring finger	2.3	4.5^b	15.6^a	0.2	0.5	1.4
∑ χ2	95.7^a	90.1^a	89.4^a	56.1^a	140.1^a	90.4^a

^a

p <0.01.

^b

p <0.05.