Table III.

Comparison of Theoretical F₂ Distributions for Solution Intake Expected Based on Single-Gene Model and F₂ Distributions Observed Experimentally

Solution	Bina	Expected frequency	Observed frequency	χ 2
75 mM NaCl	0–2	51.5	45
	2–4	50.1	75	23.3***
	4–5	48.6	27
	>5	20.8	24
4% sucrose	0–10	52.5	64
	10–15	53.9	48	15.8**
	15–20	23.6	35
	>20	41.1	24
0.1 mM citric acid	0–3	20.2	44
	3–4 4–5	51.2 42.6	59 39	43.4***
	>5	57.1	29
10% ethanol	0–1	19.5	20
	1–2	37.7	38
	2–3	21.4	38	42.4***
	3–4	31.6	49
	>4	60.8	26
0.03 mM quinine HCI	0–2	85.7	65
	2–3	50.7	66	10.4**
	>3	34.6	40

^aBin borders are expressed as intake (ml/30 g BW).

^**p < .01.

^***p < .001.