Description
Bachelor’s Degree Programme (BSCG)
Valid from 1st January, 2026 to 31st December, 2026
ASSIGNMENT (Tutor Marked Assignment)
Course Code: BZYCT-137
Course title: GENETICS AND EVOLUTIONARY BIOLOGY
Assignment Code: BZYCT-137/TMA/2026
Maximum Marks: 100 Note: Attempt all questions. The marks for each question are indicated against it.
1.Explain Trisomy 21 (Down’s Syndrome) and Trisomy 18 (Edward’s Syndrome) in detail.
2.Write short notes on the following:
a). Dosage Compensation in Humans
b). Double Helical Structure of DNA
3.What is mutation? Explain mutagenesis and significance of mutation in detail.
4.a). Explain briefly the impacts of Miller’s experiments on the theory of origin of life.
b). Discuss “struggle for existence” with reference to evolution.
5.“Industrial melanism is an excellent example to demonstrate the natural selection”. Justify the statement.
6.Write the differences between the following pairs:
a). Allopatric and Sympatric speciation
b). Pre-mating and Post-mating isolation
c). Extinction and Pseudoextinction
d). Homologous and Analogous organs
6.a). Define the following terms:
i). Gene ii). Homozygous iii). Position effect iv). Vestigial organs v). Wallace effect
b). Match the following:
8.Explain the clinical significance of Rh antigens in human blood.
9.a)Explain why did Mendel select pea plants for his experiments.
b) What is crossing over? Give any four features of crossing over.
10.a) “In small populations, the gene frequencies often tend to drift.” Justify the statement giving suitable example.
b) Enlist the various changes that took place in the evolution of horse (any five).
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