Упр.72 Unit 3 2020 ГДЗ Enjoy English 11 класс

Listen to the answers and check your guesses. Which of the facts do you find the most surprising?

Cloning, in scientific terms, started off being a natural phenomenon: identical twins, triplets, quads, etc. are in fact clones. This is because they have identical DNA, or deoxyribonucleic acid — they are simply copies of each other.

The term clone is derived from the Greek word for twig — a very small thin branch from a tree or bush.

Mice formed from embryo cells were first cloned in Russia in 1986.

Dolly, a sheep, was the first mammal to have been successfully cloned from an adult cell. She was cloned at the Roslin Institute in Scotland and lived there until her death at the age of six. Her birth was announced on 22 February 1997.

Cloned animals age faster than normal animals.