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Jamb Biology 2003 Past Questions and Answers

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Jamb 2003 Biology Past Questions

Question 36:


Soil fertility can best be conserved by the activities of

A. Earthworm
B. Man
C. Rodent
D. Microbes


Question 37:


The pioneer organisms in ecological succession are usually the

A. Mosses
B. Lichens
C. Ferns
D. Algae


Question 38:


If a DNA strand has a base sequence TCA, its complementary strand must be

A. ATG
B. TAG
C. GAT
D. AGT


Question 39:


A man and his wife are both heterozyous for the sickle-cell trait. The likely percentage of their offspring that will be either carriers or sicklers is

A. 75%
B. 50%
C. 25%
D. 100%


Question 40:


If the pair of alleles for baldness is given as Bb, a female carrier will be denoted by

A. XbYB
B. XBXB
C. XBY
D. XBbXb






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