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) […]
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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 […]
CSIR NET Life Science Previous Year Questions and Solution on Origin of cell and Unicellular Evolution
Understanding Pre-adaptation: How Morphological Modifications Shape Evolutionary Success
The morphological modification is transferred to nextgeneration without any present application which mayprove beneficial in changed environment is termed as (1) Exadaptation (2) Pre-adaptation (3) Analogous (4) Paralogous Introduction Evolution […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Clarifying the Use of Genes in Plant Molecular Systematics: Myths and Facts About mtDNA, cpDNA, and rDNA
Given are some statements with reference to the use of genes in plant molecular systematics. A. mtDNA are not preferred over cpDNA or rDNA because they generally show slow rate […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Darwin’s Beagle Voyage: Why the Flora of Tropical America Most Resembles Temperate America
During Beagle voyage of Charles Darwin he observed that the flora of tropical America is most similar to- (1) Asia (2) Temperate America (3) Europe (4) Australia Introduction Charles Darwin’s […]
