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Biology Past Questions and Answers

Biology Questions

Question 1741:
JAMB 2012
Which of the following is true in blood transfusion?
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  • A Person of blood group AB can donate blood only to another person of blood group AB
  • B Persons of blood groups A and B can donate or receive blood from each other
  • C A person of blood group AB acn receive blood only from persons of blood group A or B
  • D A person of blood group O can donate only to a person of blood group O
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Question 1742:
JAMB 2012
A yellow maize is planted and all the fruits obtained are of yellow seeds. When they are croos-bred, yellow seeds and white seeds are obtained in a ratio 3:1 . The yellow seed is said to be
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  • A Non-heritable
  • B Sex-linked
  • C A recessive trait
  • D A dominant trait
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Question 1743:
JAMB 2012
When a colour-blind man marries a carrier woman. What is the probability of their offspring being colour blind?
SchoolNGR Classroom
  • A 25%
  • B 50%
  • C 75%
  • D 100%
View Answer & Explanation
Question 1744:
JAMB 2012
The correct base pairing for DNA is
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  • A Adenine → thymine and guanine → cytosine
  • B Adenine → guanine and thymine → cytosine
  • C Adenine → cytosine and guanine → thymine
  • D Adenine → adenine and cytosine → cytosine
View Answer & Explanation
Question 1745:
JAMB 2012
The short thick break in birds is an adaptation for
SchoolNGR Classroom
  • A Crushing seeds
  • B Sucking nectar
  • C Tearing flash
  • D Straining mud
View Answer & Explanation

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