Jamb Biology 1997 Past Questions and Answers

Question 41:

• JAMB 1997

One of the most effective ways of controlling guinea worm is by

A. Treating the disease
B. Public enlightenment campaigns
C. Accelerating rural developmnet
D. Provision of portable drinking water

Question 42:

• JAMB 1997

During binary fission in lower organisms, the nucleus is known to undergo

A. Mitosis
B. Meiosis
C. Fragmentation
D. Mutation

Question 43:

• JAMB 1997

One reason for the success of Mendel's work is that the

A. Was the first to carry out research work on modern genetics
B. Introduced quantitative and qualitative elements into his work
C. Selected two characteristics only at a time for study
D. Drew up his laws of inheritance based on his knowledge of chromosomes

Question 44:

• JAMB 1997

The homozygous condition Hb^sHb^sresults in sickle cell anaemia whereas Hb^AHb^s has the sickling trait. What is the probability that a couple with the sickling trait will give birth to one normal child?

A. 1/2
B. 1/4
C. 1/8
D. None

Question 45:

• JAMB 1997

What combination of character should a prey develop to survive the environment of its predator?

A. Camouflag, well developed limbs and effective vision
B. Showy colour, big body and well developed limbs
C. Camouflage, big body and effective vision
D. Showy colour, well developed muscles and an acute sense of smell