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Jamb 2003 Biology Past QuestionsQuestion 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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