Hello, everyone,
“In a study at Princeton University in 1992, research scientists looked at two different groups of mice. One group was made intellectually superior by modifying the gene for the glutamate receptor. Glutamate is a brain chemical that is necessary in learning. The other group was genetically manipulated to be intellectually inferior, also done by modifying the gene for the glutamate receptor. . . . ”
I understand the underlined part could be paraphrased into;
[The other group = the antecedent] was genetically manipulated to be intellectually inferior, which was also done by modifying the gene for the glutamate receptor = non-identifying relative clause].
I’ll appreciate, if you kindly advise me with a better idea to parse the part above.
* source;
