(1). Action of topoisomerase leads to changes in a. Linking number of single-stranded linear DNA b. Lining number of double stranded linear DNA c. Linking number of closed circular single stranded DNA d. Linking number of closed circular double stranded DNA (2). Sarcomas are cancers originating from: a. Spleen b. […]
DBT BET JRF – 2017 Biotechnology JRF Solved Question Paper (PDF) Original / Official Solved Question Paper of DBT BET JRF Examination 2017 with Answer Key (Department of Biotechnology – Biotechnology Eligibility Test – Junior Research Fellowship). You can download this question paper as PDF file for the preparation of your examination. […]
Different Types of DNA Conformations DNA, the genetic information carrier molecule of the cell, is a long polymer of nucleotides and can adopt different types of structural conformations. The various types of conformations that the DNA can adopt depend on different factors such as: 1. Hydration level 2. Salt concentration […]
Stelar Evolution in Pteridophytes What is stele? What are the components of stele? Ø Stele is the central cylinder or core of vascular tissue in higher plants. Ø The stele consists of xylem, phloem, pericycle and medullary rays and pith if present. Ø The term ‘stele’ was for the first […]
Parasitic Adaptations What is meant by Adaptation? Adaptation definition: ‘Any feature of an organism or its part which enables it to exist under conditions of its habitat is called adaptation.’ The adaptations are mainly to withstand the adverse conditions of the environment and to use the maximum benefit of the environment. What are Parasites? A parasite […]