Q. No.Peak getting higher and narrower is observed in which of the operation of natural selection?
(1) Disruptive
(2) Directional
(3) Stabilising
(4) Both A and B
(1) Disruptive
(2) Directional
(3) Stabilising
(4) Both A and B
If the population of a place has a certain character which is recessive in as many as 100 individuals. Find the value of q if total number of individuals are 1000
(1) 0.1
(2) 0.7
(3) 0.3
(4) 1.0
If 900 people make a population such that 300 are albino. Calculate the frequency of carriers?
(1) 42
(2) 44
(3) 48
(4) 49
If a population has dominant phenotype in 1600 individuals out of 2000 then calculate the frequency of heterozygote.
(1) 494
(2) 256
(3) 128
(4) 356
If in a given population number of individuals with dominant phenotype are 60% what will be the number of heterozygote in that population?
(1) Around 23%
(2) Around 46%
(3) 26%
(4) 25%
If more individuals acquire peripheral character value at both the ends of the distribution curve; in such case natural selection has resulted in
(1) Stabilization
(2) Directional
(3) Disruption
(4) May be B or C depending upon population parameters
The mechanism of non cellular aggregates of giant macromolecules to cell with membranous envelop is
(1) Natural selection
(2) Not known
(3) Mutation
(4) Recombination
Which of the following could evolve by the time of 500 mya?
(1) Jawless fishes
(2) Invertebrates
(3) Sea weeds
(4) Lobefins
Bryophytes evolved from
(1) Psilophyton
(2) Rhynia type plants
(3) Tracheophyte ancestors
(4) Chlorophyte ancestors
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