Occur rence of endemic species in South America and Australia is due to
[2001]
Half life period of C is about
[2001]
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Which of the following are homologous organs?
[2002]
There is no life on moon due to the absence of
[2002]
Sequence of which of the followings is used to know the phylogeny?
[2002]
In which era reptiles were dominant?
[2002]
Two different species can not live for long duration in the same niche or habitat. This law is
[2002]
Which of the following is most important for speciation ?
[2002]
According to fossils discovered up to present time origin and evolution of man was started from
[2002]
In which condition the gene ratio remains constant for any species?
[2002]
In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because
[2003]
Which one of the following sequences was proposed by Darwin and Wallace for organic evolution ?
[2003]
Industrial melanism is an example of
[2003]
In a random mating population in equilibrium, which of the following brings about a change in gene frequency in a non-directional manner? [2003]
Convergent evolution is illustrated by
[2003]
Which one of the following describes correctly the homologous structures ?
[2003]
Darwin in his 'Natural Selection Theory' did not believe in any role of which one of the following in organic evolution ?
[2003]
Random genetic drift in a population probably results from
[2003]
Presence of gills in the tadpole of frog indicates that
[2004]
What kind of evidence suggested that man is more closely related with chimpanzee than with other hominoid apes?
[2004]
Age of fossils in the past was generally determined by radio-carbon method and other methods involving radioactive elements found in the rocks. More precise methods, which were used recently and led to the revision of the evolutionary periods for different groups of organisms, includes
[2004]
According to Oparin, which one of the following was not present in the primitive atmosphere of the earth
[2004]
Which of the following is the relatively most accurate method for dating of fossils?
[2005]
Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example.
[2005]
There are two opposing views about origin of modern man. According to one view Homo erectus in Asia were the ancestors of modern man. A study of variation of DNA however suggested African origin of modern man. What kind of observation on DNA, variation could suggest this? [2005]
33 docs|83 tests
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33 docs|83 tests
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