题目选项分析

As a result of the ground-breaking work of Barbara McClintock, many scientists now believe that all of the information encoded in the 50,000 to 100,000 different genes found in a human cell is contained in a mere three percent of the cell's DNA.

As a result of the ground-breaking work of Barbara McClintock, many scientists now believe that all of the information encoded in 50,000 to 100,000 of human cells' different genes is contained in merely three percent of the cell's DNA.