165. In Drosophila, the growth of legs on the head instead of antennae during development is an example of: (1) Homeotic transformation (2) Epigenetic modification (3) Chromosomal aberrations (4) Dysgenesis […]
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DBT BET JRF 2021 Previous Year Questions and Video solution
Exploring the Use of Byssus from Sea Mussels in Strong Adhesives
145. Strong adhesives can be prepared using the constituents of one of the following: (a)Base of sea anemone (b)Byssus generated by sea mussel (c)Platform generated by sea urchin (d)Tentacles of […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding the Brine Shrimp Assay: A Toxicity Testing Method
144. Brine shrimp assay involves one of the following: (a)Testing effect of changing salinity on nutritional content of shrimp (b)Testing effect of decreasing salinity on growth of shrimp (c)Testing effect […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Challenges in Human Protein Expression in Bacteria: Understanding the Causes
A CDNA encoding a human protein of interest was cloned in a bacterial expression vector and introduced into bacterial cells for expression. However, no expression of the human protein of […]
DBT BET JRF 2019 Previous Year Questions and Video solution
DNA Barcoding: The Taxonomic Method for Accurate Species Identification
164. The taxonomic method of identifying an organism to its species is: (1) Genetic speciation (2) DNA barcoding (3) RFLP (4) AFLP DNA Barcoding for Species Identification: A Powerful Taxonomic […]
DBT BET JRF 2021 Previous Year Questions and Video solution
The Impact of Xenobiotic Pollutants on Marine Organisms and Pollution Monitoring
143. Given below are two statements: Statement I: Xenobiotic pollutants are biomagnified and accumulate in marine organisms. Statement II: Pollutants can be quantified in tissue samples from key marine animals […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding the Effect of Exonuclease on Plasmid DNA Digestion
A student added a 5′ exonuclease enzyme instead of a restriction enzyme to digest his purifiedplasmid DNA sample. What is he likely to observe when he runs his plasmid digest […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Understanding Metaplasia: What It Means and How It Occurs
163. Metaplasia represents: (1) Uncontrolled proliferation of cells initiated at the metaphase of cell cycle (2) Transformation of one differentiated cell type to another (3) Cell proliferation during metamorphosis (4) […]
DBT BET JRF 2021 Previous Year Questions and Video solution
DHA and EPA: The Role of Fish and Microalgae in Human Nutrition
142. Given below are two statements: Statement I: Humans mainly obtain DHA and EPA by consuming fish whereas fish in turn obtain PUFAs from microalgae. Statement II: Microalgae derived DHA […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding Bacterial DNA Replication: Key Features and Mechanisms
Which of the following is NOT a feature of bacterial DNA replication? 1. semi-conservative 2. semi-discontinuous 3. chain growth in the 5′ -> 3′ direction 4. Unidirectional Detailed Explanation: Correct […]
