M.Sc. (Semester (CBCS) Examination Nov/Dec-2018
Zoology
POPULATION GENTICS AND EVOLUTION
Time: 2½ Hours Max. Marks: 70
Instructions: All questions are compulsory.
Figures to the right indicate full marks.
Draw neat and labeled diagrams wherever necessary.
Q.1 Multiple choice Questions:- 14
The total aggregate of alleles in a population is referred to as
Gene pool Allelic frequency
Genotypic frequency Genetic structure
Lamarck's theory of organic evolution is based upon
Effect of environment
Use and disuse principle
Inheritance of acquired characters
All of the above
In small population the gene frequencies will fluctuate in unpredictable
directions. This fluctuation is called as
Genetic shift Genetic drift
Mutation Meotic drive
The ORIGIN OF SPECIES is explained by
Lamarck Mendel
Darwin Herbert Spencer
such as polyloidy, deletion, duplication etc also result in variation.
Chromosomal mutation Meoticdrive
Bottle neck effect Microevoletion
The percentage of gametes in a gene pool for a pair of alleles depend upon

Mutation
Recessive allele
Genotypic frequencies of parental generation
Dominant allele
The altered codon leads to insertion of an incorrect amino acid into a
protein molecule during translation. This is called
missense mutation nonsense mutation
silent mutation frame shift mutation
In sickle cell anemia glutamic acid of haemoglobin is replaced by
arginine serine
valine methionine
Which of the following is not explained by the theory of natural selection
The ability to survive and reproduce
Prodigality of production
Competition
Physical strength
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SLR-VS-504
10) An example of neutral mutation is
Change in shape of RBC Weak bones
Change in eye color Change in size of RBC
11) Which of the following is meant by the term Darwin fitness
The ability to survive and reproduce
Aggressiveness
Healthy appearance
Physical strength
12) The theory of use and disuse was given by
Lamarck Mendel
Darwin Moto Kimura
13) The tendency of offspring to differ from parent is called
Variation Heredity
Inheritance Resemblance
14) The term evolution was coined by was given by
Lamarck Mendel
Darwin Herbert Spencer
Q.2 Answer the following:- (Any Four) 08
Organic evolution
Struggle for Existence
Nucleotide
Gene evolution
Adaptation
Write notes on (Any two) 06
Natural selection
Gene evolution
Mendelism
Q.3 Answer the following:- (Any two) 08
Meiotic drive
Lamarckism
Patterns of change in nucleotide and amino acid sequences
Answer the following:- (Any one) 06
Role of Mutation in evolution
Patterns of change in amino acid sequences
Q.4 Answer the following:- (Any two) 10
Genetic drift
Ecological significance of molecular variation
Patterns and mechanisms of reproductive isolation
Answer the following:- (Any one) 04
Migration
Neo-Darwinism
Q.5 Answer the following:- (Any two) 14
Discuss Eukaryotic evolution based on different gene families
Describe models of speciation
Explain Hardy Weinberg Law of genetic equilibrium and deduce the
equation.