BOTANY

Detailed explanation-1: -Naturally, clones are produced by asexual reproduction. In DNA cloning techniques clones are produced identical to the parent cell from which the mammary cell is taken. Complete answer: Dolly, the cloned sheep was produced by Ian Wilmut.

Detailed explanation-2: -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-3: -Dolly was cloned from a cell taken from the mammary gland of a six-year-old Finn Dorset sheep and an egg cell taken from a Scottish Blackface sheep. She was born to her Scottish Blackface surrogate mother on 5th July 1996.

Detailed explanation-4: -When Dolly was a year old, analysis of her DNA showed that her telomeres-caps on the ends of DNA molecules that protect them from damage-were shorter than would be expected for a normal sheep of the same age. As an animal or person ages, their telomeres become progressively shorter, exposing the DNA to more damage.