Description
BZYCT-137 GENETICS AND EVOLUTIONARY BIOLOGY
Solved Assignment 2020-2021
| Title Name | BZYCT-137 Solved Assignment 2020-21 |
| University | IGNOU |
| Service Type | Solved Assignment (Soft copy/PDF) |
| Course | BSCG |
| Language | ENGLISH |
| Semester | 2020-2021 Course: B.SC(G) CBCS |
| Session | 2020-21 |
| Short Name | BZYCT-137 (ENGLISH) |
| Assignment Code | BZYCT-137/TMA/2021 |
| Product | Assignment of BSCG 2020-2021 (IGNOU) |
| Submission Date | This assignment is valid from 1st July, 2020 to 30th June, 2021. If you have failed in this assignment or fail to submit it by June, 2020, then you need to get the assignment for the year 2021-22, and submit it as per the instructions given in the Programme Guide |
ASSIGNMENT
GENETICS AND EVOLUTIONARY BIOLOGY
Course Code: BZYCT-137
Assignment Code: BZYCT-137/TMA/2021
Maximum Marks: 100
Note: Attempt all questions. The marks for each question are indicated against it.
Part-A
Maximum Marks: 50
1. Define the following terms: (2×5=10)
a) Phenotype
b) Translocation
c) Barr Body
d) Test cross
e) Pleiotropic gene
2. Differentiate between the following pairs: (4×2.5=10)
i) DNA and RNA
ii) Down’s syndrome and Edward’s syndrome
iii) Law of segregation and Law of independent assortment
iv) Deletion and Duplication
3. Write short notes on the following: (2×5=10)
i) Dosage compensation in humans
ii) Systems of Extra Nuclear Inheritance
4. i) Explain the cytological mechanism of crossing over. (5)
ii) Describe the role of multiple alleles in self incompatibility in plants. (5)
5. What is mutation? Explain mutagenesis and significance of mutation in detail. (10)
Part-B
Maximum Marks: 50
6. Define the following terms: (2×5=10)
i) Genetic drift
ii) Homologous organ
iii) Species
iv) Coacervate
v) Vestigeal organ
7. Differentiate between the following pairs: (2.5×4=10)
i) Allopatric and Sympatric Speciation
ii) Ring species and Biological species
iii) Group selection and Kin selection
iv) Pre-mating and Post mating isolation
8. Define extinction of species. Discuss the role of extinction in evolution. (10)
9. Write short notes on the following: (2×5=10)
i) Neo Darwinism
ii) Neo Lamarckism
10. Discuss “struggle of existence” and “survival of fittest” with reference to evolution.
Keywords: BZYCT-137, BZYCT 137, BZYCT137
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