In a population, gene frequencies remain constant when there is:
A) Random mating
B) Outbreeding
C) Selective mating
D) None of the above
In a random mating population, gene frequencies remain constant generation after generation in the absence of:
A) Selection
B) Mutation
C) Migration
D) All of the above
Fitness is also referred to as:
A) Selective value
B) Adaptive value
C) Selective advantage
D) All of the above
Selection coefficient is also known as:
A) Selective value
B) Selective disadvantage
C) Selective advantage
D) Adaptive value
Non-directional force of evolution refers to:
A) Selection
B) Migration
C) Mutation
D) Random genetic drift
Selection coefficient is related to:
A) Natural selection
B) Artificial selection
C) Mass selection
D) Pure line selection
Natural selection favours those characters of an organism which are:
A) Useful for mankind
B) Related to productivity
C) Advantageous for survival
D) All of the above
When the value of fitness is unity (W = 1), there would be:
A) 100% survival
B) 50% survival
C) 25% survival
D) No survival
When the value of selection coefficient is unity (S = 1), there would be:
A) No survival
B) 10% survival
C) 50% survival
D) 75% survival
Who induced artificial mutation in plant by X-rays?
A) Muller
B) Stadler
C) Seth Wright
D) Mendel
The mutation that show more than 50% mortality in the individuals that carry it:
A) Lethal
B) Sub-lethal
C) Sub-Vital
D) Sub-vital
EMS stands for
A) Ethylmethane sulphonate
B) Ethylmethyl sulphonate
C) Ethylmethane sulpher
D) Ethyl Mustard sulphonate
Quantitative character is also called
A) Minor gene character
B) Polygenic character
C) Variable character
D) All of these
Kernel colour in wheat is a quantitative character and was studied by
A) Nilsson-Ehle
B) Mendel
C) Morgan
D) Muller
ABO blood group in human is the example of which of the following?
A) Complete dominance
B) Incomplete dominance
C) Co-dominance
D) Both b) and c)
Within a gene, a unit of mutation is called
A) Hot spot
B) Cistron
C) Muton
D) Recon
The sections of DNA (or RNA) that code for proteins are called
A) Introns
B) Exons
C) Sensor sequence
D) None of the above
Non-coding section of the RNA transcript is
A) Introns
B) Exons
C) Sensor sequence
D) None of the above

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