Question

1)You join a laboratory that is studying Zea mays,commonly referred to as corn.

You take a true-breeding plant with purple and smoth kernels andmate it to a true-breeding plant with yellow and wrinkled kernels.They produce corn with purple and smooth kernels. Theses F1 plantsare mated and produce the following:

56,251 yellow, wrinkled kernels

167,879 yellow, smooth kernels

508,748 puple smooth kernels

170,435 purple, wrinkled kernels.

If you mated one of these F2 yellow, wrinkled plants with theoriginal (parental) yellow, wrinkled plant, what proportion of theoffspring would be puprle and smooth?





2)

In an experiment with Zea mays, commonly referred to as corn,the following was observed.

A true-breeding plant with white kernels was crossed with atrue-breeding red kernel plant. The F1 offspring all had whitekernels and were self-crossed. This produced:

1809 white kernels

448 puprle kernels

166 red kernels

If the F2 plant with red kernels is mated with the F1 plant withwhite kernels, and 3600 kernels are counted, how many would beexpected to be white?

3)

You are studying Zea mays, commonly referred to ascorn.

You conduct an experiment in which a true breeding black andsmooth kerneled corn plnat is mated with a true breeding grey andwrinkled kerneled corn plant. The offspring are testcrossed to agrey and wrinkled kernel plant. The following progeny areobserved:

899 black and smooth kernels

915 grey and wrinkled kernels

42 black and wrinkled kernels

29 grey and smooth kernels

If the grey and smooth kernel plant is testcrossesd to a greyand wrinkled kernel plant, what propotion of the offspirng will begrey and wrinkled?