Early embryonic stages of pig and mouse are almost identical, it reveals- (1) Common ancestry (2) Progressive evolution (3) Directional Evolution (4) Homoplasy Introduction The early stages of embryonic development […]
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
Stable Cell Wall-Deficient Bacteria and the Proof of Adaptive Mutation: Understanding Bacterial Evolution
In an experiment bacterial cell wall was removed usingenzymatic methods. It was observed that on culturingsuch cell wall deficient bacteria, for many generations result into stable forms of bacteria permanently lacking cell […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Parsimony and the Evolution of Male Body Color in Species: Decoding Ancestral States
The phylogenetic tree below shows evolutionary relationships among 8 species. Males of these species are either blue (b) or red (r) in colour, the colour being indicated next to each […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
When Were the First Fossils Discovered? A Look at Fossil History Before Lamarck and Darwin
First fossils were discovered (1) Prior to both Lamarck and Darwin (2) Prior to Lamarck but after Darwin (3) After Lamarck but prior to Darwin (4) After Lamarck and Darwin […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Using Parsimony to Infer Ancestral Plumage Color in Birds: Red or Blue at the Root?
The phylogeny below shows evolutionary relationships between 9 extant bird species and whether they display red or blue plumage. Based on the above phylogeny and the distribution of red and […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
How Are Fossils Older Than 1 Million Years Dated? The Science Behind Determining Ancient Fossil Ages
Age of Fossils older than 1 million year ago is usuallydetermined by- (1) Sediment deposition (2) Mineral deposition (3) Radioactive decay of isotopes in fossil (4) Age of surrounding rock […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Tracing the Evolution of Eye Spots in Moths: Losses, Gains, and Ancestral States
Following tree represents phylogenetic relationships among species of a moth family. Circles represent species having eye spots on the wings. Other species do not have eye spots. The following interferences […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
How to Precisely Date Fossils Less Than 20,000 Years Old: The Role of Carbon/Nitrogen Radiometric Dating
Age of fossils lesser the 20,000 year old can be preciselyestimated by- (1) Carbon/Nitrogen (2) Potassium/Argon (3) Uranium/Lead (4) Uranium/Thorium Introduction Dating fossils accurately is crucial for understanding Earth’s history […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Why Fossils Are Generally Found in Sedimentary Rocks: The Science Explained
Fossils are gencambarally found in- (1) Sedimentary rocks (2) Igneous rocks (3) Metamorphic rocks (4) Ice Introduction Fossils are the preserved remains or traces of ancient life, offering a window […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Nuclear Genome: The Most Reliable Marker for Detecting Hybrids in Plants and Animals
Which one of the following genomes is most appropriate to determine hybrids in plants and animals? (1) Nuclear (2) Mitochondrial (3) Chloroplast (4) Mitochondria and chloroplast Nuclear Genome: The […]
