1. A species inhabiting different geographical areas is known as
a) sympatric
b) allopatric
c) sibling
d) biospecies
2. According to De Vries theory, evolution is
a) jerky
b) discontinuous
c) continuous and smooth
d) both a and b
3. Mutation may be described as
a) Continuous genetic variation
b) Phenotypic change
c) Discontinuous genetic variation
d) change due to hybridisation
4. The theory of use and disuse was given by
a) Stebbins
b) Lamarck
c) Aristotle
d) Vavilox
5. The evolution of a species is based upon sum total of adaptive
changes preserved by
a) natural selection
b) isolation
c) speciation
d) human conservation
6. Genetic drift is on account of
a) variations
b) mutation
c) increase in population
d) decrease in population
7. According to Neo- Darwinism, natural selection operates through
a) Fighting between organisms
b) Variations
c) Killing weaker organism
d) Differential reproduction
8. Sympatric speciation develops reproductive isolation without
a) Geographic barrier
b) barrier to mating
c) barrier to gene flow
d) genetic change
9. Quick change in phenotypes in a small band of colonisers is called
a) Founder effect
b) Genetic bottle neck
c) Genetic grift
d) Gene flow
10. Genetic drift is found in
a) Small population with or without
mutated genes
b) large population with random
mating
c) plant population
d) animal population
11.Which is related to reproduce isolation
a) genetic isolation
b)temporal isolation
c) behavioural isolation
d) all of these.
12. In which condition gene ratio remains constant in a species?
a) gene flow
b) mutation
c) random mating
d) sexual selection
13. Lamarck theory of organic evolution is usually known as
a) Natural selection
b) Inheritance of acquired
characters
c) Descent with change
d) continuity of fermplasm
14. Which one is used for knowing whether or not a population is evolving?
a) Degree of evolution
b) Genetic drift
c) Proportion between acquired
variations
d) Hardy Weinberg equation
15. Balancing selection is concerned with successful reproduction of
a) Homozygous recessives
b) homozygous indivduals
c) heterozygous individuals
d) all of the above
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Answers:
1-b
|
2-d
|
3-c
|
4-b
|
5-b
|
6-d
|
7-d
|
8-a
|
9-a
|
10-a
|
11-d
|
12-c
|
13-b
|
14-d
|
15-c
|
