1What is genetic technology? Write any two of its uses.
2How is a new trait developed in genetic engineering?
3Where is DNA testing mostly used, and what must be done to make it reliable?
4What is selective breeding? What is its main purpose?
5Why is selective breeding called artificial selection? Write any three of its disadvantages.
6Differentiate between inbreeding and line breeding.
7Why is a plant grown from a self-pollinated seed not identical to its mother plant in every quality?
8What is cross breeding? Differentiate between a liger and a tigon.
9How is a mule produced, and why is it useful?
10Write any three advantages and three disadvantages of cross breeding.
11A farmer never lets short goats breed and breeds only tall goats for many generations. What will happen, and why?