Evolution

In which condition, the gene ratio remains constant for any species population ?

1. Gene flow
2. Mutation
3. Sexual selection
4. Random mating

Sequence of which of the following is used to know the phylogeny ?

1. DNA
2. r-RNA
3. m-RNA
4. t-RNA

In which era reptiles were dominant ?

1. Archaeozoic era
2. Mesozoic era
3. Coenozoic era
4. Paleozoic era

Half life period of C14 is : -

1. 5000 years
2. 50 years
3. 500 years
4. 5 104 years

Similarities in organism with different genotype indicates : -

1. Divergent evolution
2. Macroevolution
3. Convergent evolution
4. Microevolution

Reason of diversity in living beings : -

1. Mutation
2. Short term evolutionary change
3. Long term evolutionary change
4. Gradual change

Which of the following is closest relative of man ?

1. Gorilla
2. Chimpanzee
3. Gibbon
4. Orangutan

Which of the following is correct order of the evolutionary history of man ?

1. Peking man, Heidelberg man, Neanderthal man, Cro-Magnon man
2. Peking man, Neanderthal man, Homo sapiens, Cro-Magnon man
3. Peking man, Neanderthal man, Homo sapiens, Heidelberg man
4. Peking man, Homo sapiens, Neanderthal man, Cro-Magnon man

First life on earth was : -

1. Autotrophs
2. Photoautotrophs
3. Cyanobacteria
4. Chemoheterotrophs

Forthcoming generations are less adaptive than their parental generation due to

1. Genetic drift
2. Natural selection
3. Mutation
4. Adaptation