GENETICS Question Papers (SUPPLE,2007)

SET 1 :

1. Write short notes on:

a) Codominance

b) Incomplete dominance

c) Dominance

d) Multiple alleles

2. Explain how long strands of DNA are condensed into chromosomes?
3. What are HFr strains?Discuss their importance in conjugation.
4. Explain what is meant by mitotic crossing over?
5. Write short notes on:

a) Down’s syndrome

b) Turner’s syndrome

6. Write notes on:

a) F- and F+ bacteria

b) Hfr and F-conjugation.

7. Haemophilia predominantly expresses in males –justify the statement.
8. Differentiate between extra nuclear and nuclear inheritance.

SET 2 :

1. Explain the terms:

a) Test cross

b) Back cross

c) Heterozygous and Homozygous

d) Phenotype and Genotype

2. Justify that Prokaryotic genetic organization is simpler compared toeuchromatic genetic organization.
3. Write short notes on:

a) Chiasma and crossing over

b) Recombination frequency and linkage intensity.

4. Describe mitotic recombination in detail.
5. Give an account on structural chromosome mutations.
6. Write notes on:

a) Chromosome mapping

b) F+ transfer

7. Write about sex linked traits in humans with Haemophilia as example.
8. Kappa particles in paramecium exhibit uniparental inheritance-Explain.

SET 3 :

1. How did Mendel explain the segregation of two or more genes?

2. Write short notes on:

a) Histones

b) Euchromatin.

3. Write short notes on:

a) Competence factor in Transformation

b) Abortive Transduction.

4. Describe a Two-point test cross in detail.

5. Write in detail about human karyotyping.

6. How sex is determined in Bacteria? Write about F+ and F-strains.

7. Heterochromatinization occurs only in females-Explain.

8. Write about petite phenotypes in yeast.

SET 4 :

1. Write short notes on:

a) Codominance

b) Incomplete dominance

c) Dominance

d) Multiple alleles.

2. What is the importance of presence of histones in Eukaryotic chromosomes?

3. How was the process of transformation discovered by Griffith’s experiment?

4. Describe a Two-point test cross in detail.

5. Describe the organization of Prokaryotic Genome.

6. Write in detail about mechanism of bacterial conjugation.

7. Write about role of sex chromosomes in sex differentiation and development in Humans.

8. Write notes on:

a) Variegated phenotype

b) CO2 sensitivity in drosophila.