Manipulation Of Food Species

Question 1

Asexual reproduction

Answer 1

Production of new organisms using genetic material from a single individual. The offspring are genetically identical to the parent

Question 2

Explain vegetative propagation

Answer 2

Form of asexual reproduction. Shoots grow out from a parent plant. Where they touch the ground, roots and leave start to grow and a daughter plant develops

Question 3

Explain the method of cutting

Answer 3

Putting the cut end of a stem into damp soil. Roots develop from the cur and end a new plant that is genetically identical to the original parent

Question 4

What does micropropagation involve?

Answer 4

Micropopagation involves growing plants from small pieces of plant tissue on a sterile nutrient medium under carefully controlled conditions

Question 5

Explain the method cloning of asexual reproduction

Answer 5

Cloning using genetic material from body cells involves taking the genetic material from a body cell of one individual and implanting it into the egg ce,l from a different individual so that it develops like a normal fertilised egg

Question 6

Cross breeding

Answer 6

Producing offspring by mating parents of two different breed or varieties

Question 7

Heterosis

Answer 7

The hybrid vigour produced by breeding 2 organisms that are not closely related

Question 8

Hybrid vigour

Answer 8

The good health achieved by breeding between breeds that are not closely related. This reduces the risk of inbreeding and recessive gene diseases