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NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JULY/AUGUST 2018 EXAMINATION

Course code: BIO 301

Course title: Genetics (2 CREDIT UNITS)

Time allowed: 2 Hours

 

INSTRUCTION: Answer question ONE (1) and any other THREE (3) questions

 

1a. Define aneuploidy (2marks)

1b. List the three ways in which polygenic traits can be distinguished (3marks)

1c. List the three main goals of population genetics (6marks)

1d. Define haemophilia (2marks)

1e. Name the four types of chromosomes abnormalities (4marks)

1f. Explain the term nondisjunction (2marks)

1g.What is an inborn error of metabolism? (3marks)

1h. Name three inherited characteristic in man (3marks)

 

2a. Explain how genes determine sex in man (7marks)

2b. With examples, explain the different types of polyploidy (8marks)

 

3a. Discuss polyploidy in animals (7marks)

3b. Write short note on mRNA (8marks)

 

4a. Discuss the application of aneuploidy (7marks)

4b. Discuss briefly the four factors that affect Hardyweinberg principles (8marks)

 

5a. Discuss the environment and gene expression (10marks)

5b. Explain the first single gene polymorphisms (5marks)


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