题目

The Garden Burgers located in Truman was recognized by the Garden Burgers head office in Kansas City, Missouri．The Truman location of Garden Burgers recorded the highest sales last year．It brought in over $ 1 ,500,000 for the entire year．But what is more important is that Truman only has a population of 40,000．The store directly behind the Truman store in terms of sales is located in a city of over 300,000． Fred Laster and Jasper Watts bought into the Garden Burgers franchise （特许） only 3 years and a few months ago．They have used the combination of a good restaurant图是某一伴性遗传病的系谱图，根据此图可推出A.该病是隐性遗传病B.该病是显性遗传病C.Ⅰ-2携带致病基因D.Ⅱ-3是纯合子