Waec Biology 2010 Past Questions and Answers

Question 56:

• WAEC 2010

What would be the phenotypic ratio of the offspring of a cross between a heterozygous dominant parent and a double recessive parent?

A. 1 : 2: 1
B. 1 : 1
C. 3 :1
D. 2 : 1

Question 57:

• WAEC 2010

The percentage probability that a normal male married to a carrier woman would have a haemophilic male child is

A. 35%.
B. 50%
C. 75%
D. 100%.

Question 58:

• WAEC 2010

The importance of courtship in animals includes the following except

A. Ensuring that the female chooses the right male species
B. Arousing both male and female partners
C. Protection of territory
D. To coincide with the ovulation period and ensure fertilization

Question 59:

• WAEC 2010

In evolution, analogous structures are significant because they show

A. Physiological diversity
B. Functional diversity
C. Genetic diversity
D. Structural diversity

Question 60:

• WAEC 2010

Which of the following statements reflects the mechanism of natural selection?

A. There are variations within every species
B. Individuals of every species are genetically identical
C. No organism in a species dies before sexual maturity
D. Organisms with selective advantages are less likely to survive