The classical example of adaptive radiation is :
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Convergent evolution of two species is associated with:
Organs which have the same fundamental structure but are different in function are called
Which of the following are not analogous organs:
Organism living in cold areas have shorter extremeties than the organisms of warm area. It states :
Struggle for existence and survival of the fittest theories were given by :
Archaeopteryx is a connecting link between :
Which of the following is not a concept of Lamarck?
Being all mammals, whales, dolphins, bat, monkey and horse have some common characters but they also show conspicuous differences. This is due to phenomenon of :
Most modern hypothesis regarding origin of life was given by :
Which of the following ancestor of man was found of painting and weapons making :
The scientific name of Homo erectus-erectus has been given to :
On which continant maximum fossils of prehistoric man have been recoverd :
Which of the following is commonly called "age of mammals" ?
The frequency of mutant gene in a population is expected to increase if that gene is
Wings of insects and wings of birds are the examples of :
Archeopteryx, a transitional fossil between birds and reptiles was discovered from the rocks of following period :
Use and disuse theory was proposed by :
Gases found in primitive atmospheres are :
Chromosome number 2n-1 is an example of:
A change in the chromosome number is called?
A mutant micro-organism unable to synthesize a compound required for its growth but able to grow if the compound is provided, is known as
Mutations are generally induced by means of :