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Evolution

689 Questions Start Allen Test
All Exams Allen Errorless
Q401 Allen THEORIES OF ORGANIC EVOLUTION MCQ
In a population that is in Hardy Weinberg equilibrium, the frequency of a recessive allele for a certain hereditary trait is 0.20. What percentage of the individual in the next generation would be expected to show the dominant trait :-
A.
16%
B.
32%
C.
64%
D.
96%
Q402 Allen THEORIES OF ORGANIC EVOLUTION MCQ
In a random mating population frequency of disease-causing recessive allele is 80%. What would be the frequency of carrier individuals in population :-
A.
64%
B.
32%
C.
16%
D.
100%
Q403 Allen THEORIES OF ORGANIC EVOLUTION MCQ
In a random mating population frequency of dominant allele is 0.7. What will be the frequency of recessive phenotype :ā€”
A.
0.49
B.
0.09
C.
0.3
D.
0.21
Q404 Allen THEORIES OF ORGANIC EVOLUTION MCQ
At a particular locus, frequency of 'A' allele is 0Ā·6 and that of 'a' is 0Ā·4. What would be the frequency of heterozygotes in a random mating population at equilibrium :-
A.
0Ā·24
B.
0Ā·16
C.
0Ā·48
D.
0Ā·36
Q405 Allen THEORIES OF ORGANIC EVOLUTION MCQ
The existence within a population of nonbeneficial alleles in heterozygous genotype is:
A.
genetic load
B.
genetic drift
C.
genetic flow
D.
selection
Q406 Allen THEORIES OF ORGANIC EVOLUTION MCQ
Some bacteria are able to grow in Streptomycin containing medium due to -
A.
Natural selection
B.
Induced mutation
C.
Reproductive isolation
D.
Genetic drift
Q407 Allen THEORIES OF ORGANIC EVOLUTION MCQ
Which of the following is important for speciation ?
A.
Seasonal isolation
B.
Reproductive isolation
C.
Behavioural isolation
D.
Tropical isolation
Q408 Allen THEORIES OF ORGANIC EVOLUTION MCQ
Genetic drift rapidly operates in :-
A.
Small isolated population
B.
Large isolated population
C.
Fast reproductive population
D.
Slow reproductive population
Q409 Allen THEORIES OF ORGANIC EVOLUTION MCQ
De Vries gave his mutation theory on organic evolution while working on ā€“
A.
Oenothera lamarckiana
B.
Drosophila melanogaster
C.
Pisum sativum
D.
Althea rosea
Q410 Allen THEORIES OF ORGANIC EVOLUTION MCQ
Which of the following factors help in evolution but is not considered as the basic factor for evolution?
A.
Isolation
B.
Adaptation
C.
Variation
D.
Mutation
Q411 Allen THEORIES OF ORGANIC EVOLUTION MCQ
Factors helps in the formation of new species are:
A.
competition and variation
B.
isolation and competition
C.
competition and mutation
D.
isolation and mutation
Q412 Allen THEORIES OF ORGANIC EVOLUTION MCQ
The idea not related to the Darwinian evolutionary theory is :
A.
survival of the best
B.
struggle for existence
C.
inheritance of acquired characters
D.
origin of species by natural selection
Q413 Allen THEORIES OF ORGANIC EVOLUTION MCQ
Inheritance of acquired characters comes from :
A.
Lamarckism
B.
Darwinism
C.
Neo-Lemarckism
D.
Neo-Darwinism
Q414 Allen THEORIES OF ORGANIC EVOLUTION MCQ
Coverstone of theory of Darwin was :
A.
natural selection
B.
inheritance of acquired characters
C.
omnis cellulae e cellulae
D.
higher productivity
Q415 Allen THEORIES OF ORGANIC EVOLUTION MCQ
The chance of elimination of genes from a small population is an example of :
A.
selection pressure
B.
speciation
C.
adaptation
D.
genetic drift
Q416 Allen THEORIES OF ORGANIC EVOLUTION MCQ
The classical example of adaptive radiation is:
A.
Darwin finches
B.
Marsupials of Australia
C.
Giant turtle
D.
All of these
Q417 Allen THEORIES OF ORGANIC EVOLUTION MCQ
Struggle for existence and survival of the fittest theories were given by :
A.
Wallace
B.
Darwin
C.
Lamarck
D.
None of these
Q418 Allen THEORIES OF ORGANIC EVOLUTION MCQ
Which of the following is not a concept of Lamarck?
A.
Environmental pressure causes variation
B.
Rate and survival of organism is different due to variation
C.
Inheritance of acquired character
D.
If an organ is used constantly it will continuously increase its size.
Q419 Allen THEORIES OF ORGANIC EVOLUTION MCQ
Initiating force of evolution is :
A.
Variation
B.
Natural selection
C.
Adaptation
D.
Competition
Q420 Allen THEORIES OF ORGANIC EVOLUTION MCQ
According to the Neo-Darwinian theory which of the following is responsible for the origin of new species?
A.
Mutations only
B.
Useful variations and natural selection
C.
Mutations together with natural selection
D.
Hybridization only
Q421 Allen THEORIES OF ORGANIC EVOLUTION MCQ
Which of the following was not given by Darwin's theory of evolution ?
A.
Struggle for existence
B.
Over production
C.
Natural selection
D.
Genetic drift
Q422 Allen HUMAN EVOLUTION MCQ
Which primate is closest to man regarding organic evolution ?
A.
Gibbon
B.
Gorilla
C.
Sinanthropus
D.
Orangutan
Q423 Allen HUMAN EVOLUTION MCQ
Which character applies to Homo sapiens ?
A.
Opposable toe
B.
Large canine
C.
Cranial capacity 1450 cc
D.
Chin prominence absent
Q424 Allen HUMAN EVOLUTION MCQ
Homo erectus differed from Cro-magnon man in having :
A.
Jaws protruding out
B.
Tool making
C.
Sloping jaws
D.
Arts and paintings
Q425 Allen HUMAN EVOLUTION MCQ
Which of the following statement is correct?
A.
Proconsul was ancestor of man and ape
B.
Proconsul was ancestor of man and not of ape
C.
Apes were ancestor of man anatomically
D.
None of them