Waec Biology 2007 Past Questions and Answers

Question 56:

• WAEC 2007

What is the probability of producing a child of blood group O by a woman of blood group O and a man of blood group A?

A. 25%
B. 5 %
C. 75%
D. 100%

Question 57:

• WAEC 2007

An albino man marries a normal woman (homozygous for skin pigmentation). What is the probability that the people could have an albino child?

A. 0%
B. 0.5%
C. 25%
D. 60%

Question 58:

• WAEC 2007

If a cross between a red-flowered plant and a white-flowered plant produced red-flowered plants, the result can be described as an example of

A. Partial recessiveness
B. Dominance
C. Incomplete dominance
D. Out-breeding

Question 59:

• WAEC 2007

Which of the following inherited conditions usually shows incomplete dominance?

A. Sickle cell anaemia
B. Haemophilia
C. Tongue rolling ability
D. Baldness

Question 60:

• WAEC 2007

The theory of survival of the fittest was propounded by

A. Darwin
B. Lamarck
C. Linnaeus
D. Mendel