How do traits get passed on from parent to offspring?
Problem 1:
Parents: P
X 
Offspring 1: F1
Explain how a black-kernelled parent and a yellow-kernelled parent can produce the offspring shown above. Black kernels are dominant to yellow kernels. This means if a kernel has 1 copy of the black kernel gene and 1 copy of the yellow kernel gene it will appear black.
Problem 2
Parents
X
Offspring
Explain how black-kernelled parents can produce the offspring as shown.