A student analyzed ears of corn that demonstrated two traits in the F2 kernels, purple or white colors and smooth or wrinkled shapes. A tabulation of 135 individual kernels gave the following results:

purple and smooth = 75
white and smooth = 28
purple and wrinkled = 24
white and wrinkled = 8

How many phenotypes are present?

2
3
4
6

Question

A student analyzed ears of corn that demonstrated two traits in the F2 kernels, purple or white colors and smooth or wrinkled shapes. A tabulation of 135 individual kernels gave the following results:

purple and smooth = 75
white and smooth = 28
purple and wrinkled = 24
white and wrinkled = 8

How many phenotypes are present?

2
3
4
6

anonymous · Answer

purple smooth, white smooth, purple wrinkled, white wrinkled 

Since this appears to be a 9:3:3:1 typical of a dihybrid cross, you can say that color and shape appear to be assorting independently and are thus separate traits -- so the phenotypes would be 
purple 
white 
smooth 
wrinkled

*Sources from the Internet