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一、试题解析32.已知果蝇的灰体和黄体受一对等位基因控制,但这对相对性状的显隐性关系和该等位基因所在的染色体是未知的。同学甲用一只灰体雌蝇与一只黄体雄蝇杂交,子代中♀灰体:♀黄体:♂灰体:♂黄体为1:1:1:1。同学乙用两种不同的杂交实验都证实了控制黄体的基因位于X染色体上,并表现为隐性。请根据上述结果,回答下列问题:⑴仅根据同学甲的实验,能不能证明控制黄体的基因位于X染色体上,并表现为隐性?⑵请用同学甲得到的子代果蝇为材料设计两个不同的实验,这两个实验都能独立证明同
Analysis of test questions 32. It is known that the gray body and corpus luteum of a fruit fly are controlled by a pair of alleles, but the recessive relationship to the relative trait and the chromosome in which the allele is located are unknown. Classmates with a gray body female flies and a luteinized male cross, the offspring Zhongli gray body: ♀ luteal body: ♂ gray body: ♂ corpus luteum for 1: 1: 1: 1. Students B with two different hybridization experiments have confirmed that the control of the corpus luteum gene is located on the X chromosome, and showed recessive. According to the above results, answer the following questions: (1) only based on the students’ experiments, can we prove that the control of corpus luteum gene is located on the X chromosome and showed recessive? (2) A different experiment, both experiments can independently prove the same