Jamb Biology 2002 Past Questions and Answers

Question 46:

• JAMB 2002

The first four children of a couple were all girls. The probability that the fifth will also be a girl is

A. 1/5
B. 1/4
C. 1/3
D. 1/2

Question 47:

• JAMB 2002

Genetic counselling is important when a marriage is planned between a

A. Rh^- woman and Rh ^man+
B. Rh^- woman and Rh^- man
C. Rh⁺ woman and Rh⁺ man
D. Rh⁺ woman and Rh^- man

Question 48:

• JAMB 2002

What proportion of the offspring of a cross between two heterozygous parents will exhibit the recessive condition phenotypically

A. 1/4
B. 1/2
C. 3/4
D. 4/4

Question 49:

• JAMB 2002

A hormone secreted at IV serves to

A. Make the body react to emergencies
B. Lower blood glucose level
C. Raise the level of calcium ions in the blood
D. Facilitate the development of facial hairs

Question 50:

• JAMB 2002

Ovoviparity is the type of fertilization exhibited by the organism labelled

A. IV
B. III
C. II
D. I