LSE-03 GENETICS in English Solved Assignment 2020

LSE-03 Genetics Solved Assignment 2020


(Tutor-Marked Assignment)
Course Code: LSE-03
Assignment Code: LSE-03/TMA/2020
Max. Marks: 100

Title Name

LSE-03 LIFE SCIENCES Solved Assignment 2020

University IGNOU
Service Type Solved Assignment (Soft copy/PDF)
Language ENGLISH
Semester 2019-2020 Course: BSC (LIFE SCIENCES) LSE
Session 2019-20
Short Name LSE-03 (ENGLISH)
Assignment Code LSE-03/TMA/2020
Product Assignment of BSC (LIFE SCIENCES) 2020 (IGNOU)
Submission Date Valid from 1st January to 31st December 2020



1. With the help of examples and well labelled diagrams describe chromosomal sex
determination mechanisms in higher plants and animals. 10
2. Define the following terms – gene, allele, genotype, phenotype, dominant,
recessive, homozygous, heterozygous, backcross and testcross. 10
3. Explain the molecular organization of chromosomes with the help of clear and well
labelled diagrams. 10
4. Describe origin and phenotypic effects of the following structural chromosomal
aberrations – deletion, duplication, inversion and translocation. 10
5. Write an account on the components and regulation of gene expression in lac
(lactose) operon with the help of clear and well labelled diagram. 10
6. Write short notes on: transposable genetic elements, and cell types of immune
system of humans. 10
7. Differentiate between monozygotic and dizygotic twins. What is the use of twin
studies? State Hellin’s Law and discuss its applications in twin studied. 10
8. Explain the principle of recombinant DNA technology and list the applications of
genetic engineering technique. 10
9. State Hardy-Weinberg Law. Justify the relationship between allelic and genotypic
frequencies by applying binomial equation. 10
10. Fill-in column 3 with appropriate Blood Group.


LSE-03, LSE-3, LSE 03, LSE 3, LSE03, LSE3, LSE


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