4.6.2.5 Cloning

Question 1

What is tissue culture?

Answer 1

• Using small groups of cells from part of a plant to grow identical new plants this is important for preserving rare plant species or commercially in nurseries

Question 2

What are cuttings?

Answer 2

• An older but simple method used by gardeners to produce many identical new plants from a parent plant

Question 3

What are embryo transplants?

Answer 3

• Splitting apart cells from a developing animal embryo before they become specialised then transplanting the identical embryos into host mothers

Question 4

What are the steps of adult cell cloning?

Answer 4

• The nucleus is removed from an unfertilized egg cell
• The nucleus from an adult body cell such as a skin cell is inserted into the egg cell
• An electric shock stimulates the eggs are to divide from an embryo
• These embryo cells contain the same genetic information as the adult skin cell
• When the embryo has developed into a ball of cells it is inserted into the womb of an adult female to continue its development