Summative Practice Chapter 12 – Question 2 (Form 5 Biology Textbook Exercise and Answer)

Question 2:(a) Figure 2.1 shows patterns of a few thumbprints.Identify the types of variations for the thumbprint pattern and discuss the factors that cause these variations.(b)(i) State the difference between gene mutation and chromosomal mutation.(b)(ii) Figure 2.2 shows four types of chromosomal mutations K, L, M and N. Based on Figure 2.2, explain the mutation … Read more

Summative Practice Chapter 12 – Question 1 (Form 5 Biology Textbook Exercise and Answer)

Question 1:Tables 1.1 and 1.2 show data that were collected for two different characteristics from 35 pupils in Form 5 Bunga Raya.(a)(i) State the types of variation for body mass and types of earlobes.(a)(ii) State two differences between body mass variation and types of earlobes variation.(b) Figure 1.1 shows a karyotype of an individual who … Read more

Formative Practice 12.3 (Form 5 Biology Textbook Exercise and Answer)

Question 1:State the differences between gene mutation and chromosomal mutation. Answer:Gene mutation involves change in nucleotide base sequence in DNA molecule of a chromosome whereas chromosome mutation involves change in structure or number of chromosome. Question 2:Explain briefly the following statement by giving suitable examples:Food can be a source of mutation. Answer:Eating food which contains … Read more

Formative Practice 12.2 (Form 5 Biology Textbook Exercise and Answer)

Question 1:State the meaning of:(a) Inheritance(b) Characteristic Answer:(a) Inheritance is the transfer of characteristic from parent to progeny or from one generation to the next generation.(b) Characteristic is a physical feature that is inherited or non-inherited. Question 2:Give two examples of inheritable characteristics in humans. Answer:Any two human characteristics: Ability to roll tongue / presence … Read more

Formative Practice 12.1 (Form 5 Biology Textbook Exercise and Answer)

Question 1:How can variation increase the survival of species? Answer:An organism in a population that has variation possesses characteristic which is adaptable to the environment compared to other organisms within the same population which do not have the variation. Question 2:Determine the following variations:(a) Intelligence(b) Presence of dimples(c) Type of hair(d) Height(e) Type of earlobes … Read more