When XxYyZz is test-crossed, out of a total of 718 offspring, we obtain the following numbers: XYZ 280
xyZ 30
XYz 50
XyZ 3
xYz 5
xYZ 42
Xyz 38
xyz 270
Total 718

Requried:
a. Which gene is in the middle?
b. Calculate map distances.
c. Calculate crossover interference.

Asample of digestive juice was removed from the stomach of a pig. the juice was placed in a test tube along with some grains of wheat. a second test tube was set up containing an equal number of wheat grains, with distilled water rather than digestive juice. the test tubes were kept for 8 hours at 40 degrees c. after 8 hours, the grains inside the digestive juice had broken into tiny particles. the grains of wheat, in the water, were wet but otherwise unchanged. what is the control group?