Question

lonesome georges genome offers clues to long life by vicky stein lonesome george, a wizened galapagos giant tortoise, was the last of his kind. when a researcher spotted the nearly five - foot - long reptile roaming pinta island in 1971, his species had been thought extinct for decades. during the 40 years that followed — until his death in 2012 — lonesome george was believed to be the only pinta giant tortoise on the planet. now, researchers are using the iconic tortoises genetic material along with dna from another long - lived turtle, the aldabra giant tortoise, to better understand what it takes to live a long life. which sentence from later in the text best helps develop the idea expressed in paragraph 2? (1 point) lonesome george was a conservation icon, gaccone said, but a conservation icon that can also provide insights into human health and aging. by targeting more than 3,000 genes of interest, the researchers could tease out the variations between humans and tortoises. thanks to this analysis, the researchers were able to narrow down their original list of 3,000 genes to 43 specific sequences that might have contributed to lonesome georges long, disease - free life.

Explanation:

Paragraph 2 mentions using Lonesome George's genetic material to understand long - life. The sentence about narrowing down genes to specific sequences related to his long, disease - free life best develops this idea as it shows the progress of the research in identifying genetic factors for longevity.

Answer:

Thanks to this analysis, the researchers were able to narrow down their original list of 3,000 genes to 43 specific sequences that might have contributed to Lonesome George’s long, disease - free life.