Category: TIFR Previous Year Question Papers 2020 Biology With Answer Key Download

15. A single-stranded RNA virus was grown in cell culture, either in absence of or in presence of chemicals X/Y. The intracellular genome copy number of the virus, and titer […]

14. A protein coding gene in the mouse was mutated such that the resultant protein was non- functional. The phenotypic effect of the mutation was observed in homozygous mutant mice, […]

13. A bacterial gene has two alleles, A and B. A scientist measured bacteria grown under two different treatments in the laboratory, and she measured proportion of the population that […]

12. In the following pedigree, what will be the genotype of the parent indicated by the dark square? Dark symbols indicate individuals with a specific phenotype, controlled by the locus […]

11. You decide to improve your western blotting by customizing the buffer used for incubation and washing and hear from friends that they routinely use reducing agents to purify proteins. […]

10. A hydrilla plant is growing in a beaker with water. What will happen to the rate of photosynthesis if you add sodium bicarbonate to the water? a. It will […]

9. A student has a mixture of different proteins (molecular weight of Protein A = 30.0 KDa; Protein B = 35.0 KDa; Protein C = 40.0 KDa; Protein D = […]

8. A student was asked to clone a DNA fragment flanked by BamHI (GGATCC) sites into a vector cut with BglII (AGATCT). The cloning was successful, as these two restriction […]

7. Dogs are genetically very close to wolves. Yet all wolves look similar while the breeds of dogs look very different from one another. This is best explained by which […]

6. The recent all India tiger census counted all individuals above the age of 1 year as adults. An earlier estimate four years ago included only individuals above the age […]