Formative Practice 5.3 – Form 4 Science (KSSM) Chapter 5


Question 1:
What is mutation?

Answer:
Mutation is a change that occurs spontaneously and randomly on the genes or chromosomes, which can cause a characteristic change in the child inheriting the modified genetic materials.


Question 2:
List three factors that cause mutation.

Answer:
Radioactive radiation, X-ray and toxic chemical substances.


Question 3:
List the advantages and disadvantages of genetic research.

Answer:
Advantages of genetic research:
(i) Improves the quality of human life such as in the field of forensic science, gene therapy and genetic genealogy.

(ii) Genetic research helps to increase the yields in a short time.

Disadvantages of genetic research:
(i) Unethical genetic modification such as making biological weapons that can harm humans.

(ii) Genetic research that produces new species will cause the original species to become extinct


Question 4:
What problems will arise if ethics and values are not practised in genetic research?
Answer:
Human life and the environment will be threatened.

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