2022년 6월 모의_[ 고1 ]_33번
❶ In a study at Princeton University in 1992, research scientists looked at two different groups of mice.
❷ One group was made intellectually superior by modifying the gene for the glutamate receptor.
❸ Glutamate is a brain chemical that is necessary in learning.
❹ The other group was genetically manipulated to be intellectually inferior, also done by modifying the gene for the glutamate receptor.
❺ The smart mice were then raised in standard cages, while the inferior mice were raised in large cages with toys and exercise wheels and with lots of social interaction.
❻ At the end of the study, although the intellectually inferior mice were genetically handicapped, they were able to perform just as well as their genetic superiors.
❼ This was a real triumph for nurture over nature.
Genes are turned on or off based on what is around you.
