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Ahs2201:Genetics And Cytogenetics Question Paper

Ahs2201:Genetics And Cytogenetics

Course:Bachelor Of Horticulture

Institution: Meru University Of Science And Technology question papers

Exam Year:2013

QUESTION ONE – (30 MARKS)
a) Differentiate the following: i. Genetics and cytogenetics ( 2 Marks) ii. Mitosis and meiosis (2 Marks) iii. Aneuploidy and myploidy ( 2 Marks) iv. Homozyous and heterozygous ( 2 Marks) b) With the aid of diagrams, explain the meiosis I process ( 8 Marks) c) i. What is population as used in genetics ( 2 Marks) ii. Wrinkled phenotyope is found in pea seeds. Explain how this phenotype is developed. ( 3 Marks) d) (i) State the three things which influences the phenotype expressed by a given organism. ( 3 Marks) ii. Explain the two methods used by genetists to distinguish homozygosity from heterozygosity condition ( 4 Marks)
e) How does a nucleoside differ from a nucleotide ( 2 Marks)
QUESTION TWO ( 20 MARKS)
Explain the DNA replication process using a diagram ( 20 Marks)
QUESTION THREE ( 20 MARKS)
a) State any three differences between DNA and RNA ( 6 Marks) b) (i) What is translation? ( 2 Marks) (ii) Explain the entire translation process ( 12 Marks)
2
QUESTION FOUR
a) Write short notes on the three types of dominance ( 6 Marks) b) Chromosome aberrations are common in cells. i. What is chromosome aberrations ( 1 Mark) ii. Give a detailed account of the various types of chromosome aberrations ( 13 Marks)
QUESTION FIVE ( 20 MARKS)
a) i. What is population genetics ( 2 Marks) ii. State the Hardy-weinberg cow of population genetics ( 2 Marks) iii. State and explain any four factors which affects the gene frequency in a population ( 8 Marks) b) i. Differentiate gene from genomics ( 2 Marks) ii. Draw a single stand of a DNA molecule ( 6 Marks)

Ahs2201:Genetics And Cytogenetics Question Paper

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