William repeated Mendel's second set of experiments. He crossed two non- pure tall pea plants and produced eight short offspring, William concluded
that Mendel's experiments were flawed.
What is wrong with William's reasoning?
A. The measurement was a source of a great deal of error,
B. William's results mirror Mendel's exactly
C. The patterns that Mendel found may not be apparent after only
eight trials
D. William should have crossed two pure-breeding tall plants,

Mr. j, age 42, is a construction worker in las vegas. he recently noticed that a mole on his face seemed to be getting larger and darker. at first he did not worry because he was in the sun a lot and assumed the change may have been caused by sunburn. after a month, not only was the mole larger and darker, but it appeared to be “bumpy.” his doctor diagnosed a malignant melanoma skin cancer following biopsy of the nevus. mr. j reports pain in his right shin that does not go away when he puts his feet up or sleeps. discussion questions 1. relate mr. j’s skin changes to the warning signs for malignant melanoma. (see malignant melanoma.) 2. discuss the normal progression of this malignancy. what is the significance of the bone pain that mr. j is experiencing? (see malignant melanoma.) 3. discuss the treatment available for this patient and the prognosis for recovery. (see malignant melanoma.)