Waec Biology Past Questions and Answers

Question 1726:

• WAEC 2017

The type of variation illustrated above is

A. Continuous variation
B. Discontinuous variation
C. Morphological variation
D. Environmental variation

Question 1727:

• WAEC 2017

Which of the following characters is not a morphological variation?

A. Shape of the nose
B. Colour of skin
C. Colour of hair
D. Tongue rolling

Question 1728:

• WAEC 2017

An apple plant can produce sexually and asexually and it has 40 chromosomes in its leaf cells. How many chromosomes would be in each gamete and somatic cell?

A. 20 chromosomes in the gametes and 10 in the somatic cells
B. 40 chromosomes in the gametes and 20 in the somatic cells
C. 20 chromosomes in the gametes and 40 in the somatic cells
D. 40 chromosomes in the gametes and 40 in the somatic cells

Question 1729:

• 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 1730:

• 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