Question

One of the biggest news stories of 1996 was the successful cloning of Dolly the sheep. Dolly was the first mammal cloned from an adult body cell. At first, Dolly appeared to be perfectly healthy. However, she died at age 6 of cancer. Dolly’s early death made scientists wonder whether cloned animals age faster than normal. A small flock of sheep cloned from Dolly have been observed since 2007. Happily, these clones show no sign of early aging. Choose the best option to complete the sentence. Scientists worried that cloned animals would age rapidly because their cells contain __________________ as old as the individual they were cloned from.

Answer 1

Cloned animals were speculated to age rapidly due to their cells containing genetic material (DNA) as old as the individual they were cloned from. However, observations of sheep cloned from Dolly have shown no signs of early aging.

Step-by-step explanation:

Scientists worried that cloned animals would age rapidly because their cells contain genetic material as old as the individual they were cloned from. Since Dolly was cloned from an adult body cell, her DNA was already older than that of a newborn lamb. However, subsequent observations of sheep cloned from Dolly have shown no signs of early aging, suggesting that cloned animals may not necessarily age faster than normal.

Answer 2

I believe the answer you're looking for is DNA, not sure though