Jamb Biology 2011 Past Questions and Answers

Question 41:

• JAMB 2011

The crossing of individuals of the same species with different genetic characters is

A. Cross breeding
B. Polygenic inheritance
C. Non-disjunction
D. Inbreeding

Question 42:

• JAMB 2011

The number of alleles controlling blood groups in humans

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

Question 43:

• JAMB 2011

During blood transfusion, agglutination may occur as a result of the reaction between

A. Contrasting antigens and antibodies
B. Two different antigens
C. Two different antibodies
D. Similar antigens and antibodies

Question 44:

• JAMB 2011

The fallacy in Lamarck's evolutionary theory was the assumption that

A. Traits are acquired through disuse of body parts
B. Acquried traits are heritable
C. Acquired traits are seldom formed
D. Traits are acquired through the use of body parts

Question 45:

• JAMB 2011

The bright coloured eye spots on the wings of moth are an example of

A. Warning colouration
B. Disruptive colouration
C. Crypsis
D. Mimicry