1. This can be caused by the loss of three additional genes , each of which has different effects , resulting in three types of syndrome .
2. This may be caused by the loss of three different additional genes , each of which has different effects , resulting in three types of syndrome .

Select your answer from the options. Are these two sentences paraphrases of each other?
Pick your answer from: a. no b. yes...I think the answer is
b.