A sex-influenced trait is dominant in bulls and causes horns. The same trait is recessive in cows and results in no horns. Fur color is not sex influenced, with black fur dominant to cream. A true breeding female with horns and black fur was crossed to a cream-colored male without horns. The F1 females were then crossed to hornless cream-colored males. The following results were obtained: Males: 30 hornless, black 68 hornless, cream-colored 74 horns, black 26 horns, cream-colored Females: 109 hornless, black 91 hornless, cream-colored 0 horns, black 0 horns, cream-colored Construct a chi square analysis to see if the genes are linked. If the genes are linked, compute the map distance between them.
A sex-influenced trait is dominant in bulls and causes horns. The same trait is recessive in cows and results in no horns. Fur color is not sex influenced, with black fur dominant to cream. A true breeding female with horns and black fur was crossed to a cream-colored male without horns. The F1 females were then crossed to hornless cream-colored males. The following results were obtained:
Males:
30 hornless, black
68 hornless, cream-colored
74 horns, black
26 horns, cream-colored
Females:
109 hornless, black
91 hornless, cream-colored
0 horns, black
0 horns, cream-colored
Construct a chi square analysis to see if the genes are linked.
If the genes are linked, compute the map distance between them.
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