LIFE SCIENCE

Detailed explanation-1: -In reproductive cloning, researchers remove a mature somatic cell, such as a skin cell, from an animal that they wish to copy. They then transfer the DNA of the donor animal’s somatic cell into an egg cell, or oocyte, that has had its own DNA-containing nucleus removed.

Detailed explanation-2: -4. What is the purpose of the Egg Cell Donor? Provides the egg, which contains the machinery (organelles, proteins, etc. in the cytoplasm) to create the embryo.

Detailed explanation-3: -To make a clone, scientists transfer the DNA from an animal’s somatic cell into an egg cell that has had its nucleus and DNA removed. The egg develops into an embryo that contains the same genes as the cell donor. Then the embryo is implanted into an adult female’s uterus to grow.

Detailed explanation-4: -We use a suction pipette (B) to hold the egg cell steady and a glass needle (C) to remove the cell’s nucleus. We have gently pushed the glass needle through the tough shell that surrounds the egg cell.