AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

CLONING GENES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What was the significance of Dolly the Sheep?
A
She was the first organism ever cloned
B
She was the first adult animal to be cloned
C
She was the first animal cloned as an embryo
D
She was the first animal to be cloned multiple times
Explanation: 

Detailed explanation-1: -Dolly was important because she was the first mammal to be cloned from an adult cell. Her birth proved that specialised cells could be used to create an exact copy of the animal they came from.

Detailed explanation-2: -Why is Dolly important? Dolly was the first mammal to be cloned from an adult cell. Before Dolly was born, this was thought to be impossible. Scientists believed that specialised adult cells, those that had a certain job (like a skin cell or a liver cell), only held the information to do with that job.

Detailed explanation-3: -On July 5, 1996, scientists at Scotland’s Roslin Institute announced that they had successfully cloned the first animal from an adult cell-a sheep named Dolly. Dolly was the first mammal to be successfully cloned using somatic cell nuclear transfer (SCNT) technology.

Detailed explanation-4: -Dolly was cloned from a mammary gland cell taken from an adult Finn Dorset ewe. Wilmut and his team of researchers at Roslin created her by using electrical pulses to fuse the mammary cell with an unfertilized egg cell, the nucleus of which had been removed.

Detailed explanation-5: -The world’s first animal cloned from an adult cell | Dolly the Sheep.

There is 1 question to complete.