The document discusses the process of cloning extinct animals using DNA from preserved samples. It provides examples of animals that may potentially be cloned such as the woolly mammoth, giant sloth, saber-toothed cat, and dodo bird. While some argue cloning could allow fixing past extinctions, others are concerned it could harm existing ecosystems or humans. The core method involves extracting DNA, multiplying cells, and implanting into a closely related surrogate host.

1. Resurrection of
Dallas Collins
5B

2. How does it work?
1. Find a cell of the of the species or a intact
nucleus in the dead cell.
2. Pick a host of the that is similar to the species
like a elephant to the woolly mammoth.
3. Multiply the cell becomes living or
developing.
4. Plant it into a womb of the host.

3. Have they already cloned a animal?
• Yes in 2003 a team of Spanish and French scientist was able to recreate a Pyrenean
ibex.
• On 22 February 1997, Ian Wilmut and his team at the University of Edinburgh’s
Roslin Institute unveiled a 7-month-old baby to a stunned world – Dolly the sheep

4. Some animals they might be able to bring back
• GIANT SLOTH
• When it went extinct: About 11,000 years ago
• How: Hunting by humans
• Where it lived: The Americas
• Size: As long as 20 feet, up to 9,000 pounds
• Diet: Ate plants but also scavenged for meat
• Random fact: Had claws as long as 20 inches
• Why we might be able to bring it back: DNA samples found in fossil dung in Utah
• SABER-TOOTHED CAT
• When it went extinct: Circa at 10,000 B.C.
• How: Probably hunting by humans
• Where it lived: North and South America
• Size: Around 6 feet long, up to 900 pounds
• Diet: Preyed on such mammals as bison, deer, horses
• Random fact: It's the official state fossil of California.
• Why we might be able to bring it back: DNA is preserved in bones at the La Brea Tar Pits in Los Angeles

5. Giant Sloth
Saber Tooth Cat

6. Some animals they might be able to bring back
• DODO
• When it went extinct: Late 1600s
• How: Mainly because on the island where it lived, newly introduced species like dogs ate chicks and eggs.
• Where it lived: Mauritius
• Size: About 3 feet tall
• Diet: Fruit, seeds
• Random fact: Lived only on the small island of Mauritius, east of Madagascar in the Indian Ocean
• Why we might be able to bring it back: Two skeletons have been found containing DNA samples.
• WOOLLY MAMMOTH
• When it went extinct: About 3,700 years ago
• How: Hunting, habitat loss due to climate change
• Where it lived: Parts of northern Asia, Europe, and North America
• Size: 9 to 11 feet tall, about 1,400 pounds
• Diet: Grass and other plants
• Random fact: Remains of a 37,000-year-old woolly mammoth calf were found in Russia.
• Why we might be able to bring it back: DNA exists in frozen soft tissue.

7. Woolly Mammoth
DoDo Bird

8. Should they bring them back /what people think
• Some people think that it give use a chance to
over and fixe mistakes that happen.
• Then others think that if they bring them back
that it could cause problem for the other
animals and even use people.

9. What is it?
• Really it just making taking DNA from the
extinct animals, multiplying it and putting it
into a similar species womb.

10. The End