Question

Palomino horses, having buckskin coloring (BB) and small ears (ww), were crossed with a Grey horse, having dapple coloring (bb) and large ears(WW). The F1 generation was buckskin with large ears, so it is assumed that these are the dominant traits. The F2 distribution was: 42 Buckskin large, 22 buckskin small, 24 dapple large, and 12 dapple small. Phenotype Observed Expected O-E (0-E) (0-5)/E Buckskin, large 42 Buckskin, small 22 Dapple, large 24 Dapple, small 12 Total 100 Chi-Square Value ? Calculate the Chi-Square Value to two decimal places, Numbers calculated along the way (the values that go in the table) should also be rounded to two decimal places in each column. Enter just the number into the answer box (Example: 21.55)

Answer 1

Phenotype	Observed	Expected	O-E	(O-E)^2	(O-E)^2/E
Buckskin Large	42	56.25	-14.25	203.0625	3.61
Buckskin, Small	22	18.75	3.25	10.5625	0.563333
Dapple, Large	24	18.75	5.25	27.5625	1.47
Dapple, Small	12	6.25	5.75	33.0625	5.29
Total	100	100	0	274.25	10.93333

10.933