The wings of insects and the wings of bats represent a case of (1) divergent evolution (2) convergent evolution (3) parallel evolution. (4) neutral evolution. The evolution of flight […]
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CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
What Homologous Structures Like Human Forelimbs and Whale Flippers Reveal About Evolution
Fore limb of human and flippers of whale are embryologically homologous structures. What does the study of homologous structures tell us about evolution? A. This is the example of adaptive […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
What Is NOT True About Homologous Characters? Understanding Homology in Evolution
Which one of the following statements is NOT TRUE about homologous characters? (1) Similar traits may not be homologous (2) Similar traits may be a result of convergent evolution (3) […]
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Homology and Analogy: Decoding Evolutionary Relationships and Processes
In order to study evolutionary relatedness between two given individuals, homology and analogy are considered. By this study we may observe the following possible information: A. Presence of homologous structures […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Why Flufftails on Pacific Islands Show Low Tail Colour Variation: Explanations and Exceptions
Flufftails in mainland Asia show high variation in tail colour. However, in the far out Pacific island, the flufftails show very little variation in tail colour. This variation in tail […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Insect and Bird Wings: A Prime Example of Convergent Evolution Driven by Flight Adaptations
Wings of insects and birds have become flat, large and stream lined, due to common requirement of flight. This is an example of (1) Convergent evolution (2) Parallel evolution (3) […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Insect Wings and Bird Wings: A Classic Example of Convergent Evolution
Insect wing and bird wings are example of (1) Coevolution (2) Convergent evolution (3) Divergent evolution (4) Parallel evolution The evolution of flight is one of nature’s most remarkable […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Genetic Drift in Small Populations: Rates of Allele Fixation and Loss per Generation
In several populations, each of size N =20, if genetic drift results in a change in the relative frequencies of alleles, A. What is the rate of increase per generation […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Genetic Drift and Allele Fixation: Predicting Outcomes in Small Drosophila Populations
75. One hundred Independent populations of Drosophila are established with 10 individuals in each population, of which, one individual is of Aa genotype and the other nine are of AA […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
How Much Genetic Variation Is Lost Each Generation in a Small Isolated Population?
In very small populations, genetic variation is often lost through genetic drift. If the population size of a mammal on an isolated island is 50, what percentage of its genetic […]
