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IGNOU LSE-03
- Genetics,
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(January 2024 - December 2024)

LSE-03 Assignment

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IGNOU LSE-03 January 2024 - December 2024 - Solved Assignment

Are you looking to download a PDF soft copy of the Solved Assignment LSE-03 - Genetics? Then GullyBaba is the right place for you. We have the Assignment available in English language.

This particular Assignment references the syllabus chosen for the subject of Life Science, for the January 2024 - December 2024 session. The code for the assignment is LSE-03 and it is often used by students who are enrolled in the B.Sc. Degree.

Once students have paid for the Assignment, they can Instantly Download to their PC, Laptop or Mobile Devices in soft copy as a PDF format. After studying the contents of this Assignment, students will have a better grasp of the subject and will be able to prepare for their upcoming tests.

IGNOU LSE-03 (January 2024 - December 2024) Assignment Questions

1. Describe with appropriate examples the role of environment in the determination of sex.

2. Detail the Watson and Crick model of DNA structure. How did it fit in the data provided by Chargaff?

3. Does the operon concept apply to eukaryotes? Describe a suggested mechanism for gene regulation in eukaryotes.

4. In a randomly mating laboratory population of Drosophila, 4 per cent of the flies have black bodies (black is autosomal recessive, b) and 96 per cent have brown bodies (normal colour, B). If this population is assumed to be in Hardy-Weinberg equilibrium, what are the allelic frequencies of B and b, and the genotypic frequencies of BB and Bb?

5. Detail the molecular basis of mutations.

6. Enlist the different types of lymphocytes. Mention their function, site of differentiation, and the type of immunity imparted by them.

7. Describe any two modern methods for the improvement of crop plants.

8. In peas, Tall (T) is dominant over dwarf (t), Yellow is dominant over green (y), and Smooth (S) is dominant over wrinkled (s). What fraction of the offspring in the following cross would be homozygous recessive for all gene pairs in the cross: YyTtss X YyttSs?

9. (a) How linkage maps are constructed? What is their use in genetic studies?
(b) How many linkage groups would be revealed by an analysis of human genome? Choose the correct answer amongst the choices given below:
i) 2
ii) 13
iii) 23
iv) 46

(c) Determine the order of genes along a chromosome based on the following recombination frequencies:

A - B 8 map units
A - C 28 map units
A - D 25 map units
B - C 20 map units
B - D 33 map units

10. Differentiate between the following pairs:

i) Somatic and gametic mutations
ii) Structural and regulatory genes
iii) Euchromatin and heterochromatin
iv) Cell-mediated and humoral immunity
v) Lytic and Iysogenic cycles

IGNOU LSE-03 (January 2023 - December 2023) Assignment Questions

1. Write short notes on the following: 

(i) Segregation Law of Mendel
(ii) Hardy Weinberg's law
(iii) X -linked traits in humans
(iv) Epistasis 

2. (a) What are multiple alleles? Explain giving a suitable example.
(b) Describe packaging of DNA into chromosome. 

3. Differentiate between the following: 

(i) Phenotype and genotype
(ii) DNA and RNA
(iii) Deamination and Depurination
(iv) T and B lymphocytes

4. What are autosomal and sex chromosome aneuploidies? Describe few of those found in humans. 

5. a) Describe Hershey and Chase experiment that proved that DNA is the hereditary material.
b) Explain lytic cycle of a bacteriophage. 

6. (a) Explain Chargaff’s rule.
(b) Define mutagenesis. What are major agents leading to mutagenesis? 

7. Explain the model for regulation of the lac operon with the help of a well labelled diagram. 

8. Describe in brief the following: 

(i) Chemical mutagens
(ii) ABO Blood group system
(iii) Autoimmune diseases
(iv) Genetic counselling

9. (a) Describe Griffith’s experiment to show transformation in DNA.
(b) Genetic engineering can be used for improving nutritional value of food. Explain in detail.

10. Describe the various applications of genetic engineering.

LSE-03 Assignment Details

  • University IGNOU (Indira Gandhi National Open University)
  • Title Genetics
  • Language(s) English
  • Session January 2024 - December 2024
  • Code LSE-03
  • Subject Life Science
  • Degree(s) B.Sc.
  • Course Core Courses (CC)
  • Author Gullybaba.com Panel
  • Publisher Gullybaba Publishing House Pvt. Ltd.

Assignment Submission End Date

The IGNOU open learning format requires students to submit study Assignments. Here is the final end date of the submission of this particular assignment according to the university calendar.

  • 30th April (if Enrolled in the June Exams)
  • 31st October (if Enrolled in the December Exams).

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English Language

  • January 2024 - December 2024 24 Pages (0.00 ), PDF Format SKU: IGNGB-AS-BS-LSE03-EN-416
  • January 2023 - December 2023 24 Pages (0.00 ), PDF Format SKU: IGNGB-AS-BS-LSE03-EN-275

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  • All Solved Answers By IGNOU Experts.
  • Available for 3 Times for Download.
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