Waec Biology 2017 Past Questions and Answers

Question 46:

• WAEC 2017

Assuming that A is the gene for normal skin colour and is dominant, while a is the gene for albinism and its recessive, what is the likely genotype of the couple which had 50% normal and 50% albino offspring?

A. AA, aa
B. Aa, aa
C. AA, Aa
D. Aa, Aa

Question 47:

• WAEC 2017

Which of the following statements is true about mutation?

A. Phenotype is not involved
B. Genotype is not involved
C. Artificial induction is not possible
D. Genotype is involved

Question 48:

• WAEC 2017

One of the structural adaptations of mammals for movement on land is the development of the

A. Hollow bones
B. Pentadactyl limb
C. Fused thoracic bones
D. Streamlined body

Question 49:

• WAEC 2017

Which of the following is NOT characteristic of social insects?

A. All members are identical
B. There is division of labour
C. The members dwell in the same habitat
D. Some members protect the queen

Question 50:

• WAEC 2017

The gradual cumulative, adaptive and heritable changes in an organism over a long period of time resulting in new species is called

A. Adaptation
B. Survival
C. Organic evolution
D. Interspecific competition