In Africa “AS” represent a carrier of sickle cell anemia, where A is the allele for normal haemoglobin and S for sickle cell haemoglobin. If the allele S is maintained […]
Category: CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Sickle Cell Anemia and Malaria: The Evolutionary Advantage of Heterozygote Superiority
It is found that people with the genetic disease called sickle cell anemia are resistant to malaria. Which of the following best describes the underlying mechanism? (1) Frequency-dependent selection (2) […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
How Directional Selection Alters Trait Distribution in Populations
Directional Selection for a particular trait will lead to the frequency of the trait: (1) being normally distributed in the population. (2) always showing a left-skewed distribution in the population. […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Co-evolution: The Key Evolutionary Process Shaping the Immune System
Which of the following evolutionary processes played an important role in the evolution of immune system? (1) Reproductive isolation (2) Adaptive radiation (3) Neutral evolution (4) Co-evolution What Is […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Understanding the Red Queen Hypothesis: Evolutionary Dynamics and Supported Statements
The following statements explain various evolutionary outcomes: (A) Within a lineage, organisms show a constant rate of extinction. (B) Even in the absence of changing interactions, organisms are constantly evolving. […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
The Red Queen Hypothesis: The Evolutionary Arms Race Between Hosts and Parasites
The “Red Queen Hypothesis” is related to (1) the mating order in the harem of a Polygamous male. (2) the elimination by deleterious mutations by sexual reproduction. (3) mate selection […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Co-evolution: The Driving Force Behind Immune System Diversity
Major reason for evolution for diversity in immune system is (1) Natural selection (2) Neutral mutations (3) Directed evolution (4) Co-evolution The Evolutionary Arms Race: Hosts vs. Pathogens Co-evolution […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Co-evolution: How Organisms Influence Each Other’s Evolutionary Pace
An organism influence the evolutionary pace of the other organism in (1) Co-evolution (2) Parallel evolution (3) Convergent evolution (4) Divergent evolution What is Co-evolution? Co-evolution is defined as the […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Why Commensalism Does Not Drive Co-evolution: Understanding Species Interactions
Among the following interactions which will not force co-evolution? (1) Commensalisms (2) Parasitism (3) Mutualism (4) Interspecific competition What Is Co-evolution? Co-evolution occurs when evolutionary changes in one species […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Co-evolution: How Predators and Prey Shape Each Other’s Evolutionary Path
The changes in prey brings changes in predator and vice-versa. Such an evolution due to competition for existence is termed as- (1) Converging evolution (2) Diverging Evolution (3) Co-evolution (4) […]
