Номер 72, страница 106 - гдз по английскому языку 11 класс (enjoy english) учебник Биболетова, Бабушис

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Section Four.

Exercise seventy-two.

Listen to the answers and check your guesses.

Facts about cloning.

Cloning is actually a natural phenomenal. Identical twins, triplets, quads, et cetera, are in fact clones. This is because they have identical DNA or dio-cerebo-nucleic 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 from embryo cells were first cloned in Russia in nineteen eighty-six.

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 six years of age. Her birth had been announced on the twenty-second of February nineteen ninety-seven.

Clone animals age faster than normal animals.