2022_심화영어

To trigger rejuvenation, the researchers put the jellyfish under stress by letting them go hungry. As the medusae got smaller, changed into little balls called bud polyps, and began remaking their adult bodies, the scientists took pictures of what genes they were using in each phase of their development. They took some jellyfish in each phase, froze them, and crushed them into a thick mixture to extract their mRNA, creating a record of which genes were actively being used to make proteins. They also compared Turritopsis dohrnii to Turritopsis rubra , a related jellyfish species that ages normally. Researchers found that, compared to its relative, the “immortal jellyfish” has double the amount of genes that repair and protect DNA. This allows Turritopsis dohrnii to produce more restorative proteins. 05 10 Connecting to You Do you think it is morally wrong to put jellyfish under stress to obtain scientific findings? Why or why not? trigger phase crush extract protein New Words Turritopsis rubra 52 Lesson 2