The following statements were made about adaptive radiation: (A) Adaptive radiation is a kind of divergent evolution driven by ecological diversification. (B) Adaptive radiation is the divergence of unrelated taxa […]
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
Adaptive Radiation: The Formation of Various Species from a Common Ancestor
Formation of various species from one common ancestor is termed as (1) Adaptive radiation (2) Phylogeny (3) Cladistics (4) Natural selection Introduction Adaptive radiation is a fundamental evolutionary process that […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Darwinian Fitness: Why Reproductive Success Is the True Measure of Evolutionary Fitness
Darwinian evolutionary fitness is measured in turn of (1) Good health (2) Ability to fight with others (3) Reproductive success (4) Lesser mutations Introduction When most people hear the word […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Disruptive Selection in Darwin’s Finches: How Bimodal Seed Distribution Favors Extreme Beak Sizes
Darwinian finches of three different size of beaks-large, intermediate and small feeds on seeds size with bimodal distribution. Under such condition natural selection will favor finches having beak size (1) […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Antibiotic Resistance in Bacteria: A Case Study of Directional Selection in Action
Antibiotic resistance among bacteria represents (1) Balancing selection (2) Stabilizing selection (3) Directional selection (4) Disruptive selection Introduction Antibiotic resistance is one of the most pressing challenges in modern medicine. […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Hybridization and Incomplete Lineage Sorting: Decoding Gene Tree Discordance in Phylogenetics
The two phylogenetic trees given below represent evolutionary patterns in species or population. The differently colored or dashed lines represent a single or gene genealogy. Select the option that correctly […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Lederberg’s Replica Plating Experiment: Proving the Spontaneous Nature of Mutation
The replica plating experiment of Lederberg supports (1) Natural selection (2) Mutation (3) Conjugation (4) Transformation Introduction The origin of genetic variation is a central question in biology. Are mutations […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
How the Green Air Act Led to the Decline of the Dark Peppered Moth in England
After implication of Green Air Act in England whichinsect form become virtually absent- (1) Biston betularia carbonifera (2) Biston betularia typical (3) Drosophila (4) Apes Americana Introduction The story of […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Understanding UPGMA Trees: Key Properties and Applications in Phylogenetics
The following statements were made describing the properties of a UPGMA tree (Unweighted Pair Group Method with Arithmetic Mean): A. It describes species relationships and is therefore the best method […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Exaptation: How Evolution Repurposes Adaptations for New Functions
A certain organism developed an adaptation as to adaptexisting environment but if this adaptation prove usefulfor some other function as well, it is termed as- (1) Co-adaptation (2) Adaptive radiation […]
