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ISC Class XII Board Specimen 2024 : Biotechnology

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ISC 12th
Indian School Certificate Examination (ISC), New Delhi

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BIOTECHNOLOGY PAPER 1 (THEORY) ----------------------------------------------------------------------------------------------Maximum Marks: 70 Time Allowed: Three Hours (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time.) ---------------------------------------------------------------------------------------------------------------- Answer all questions in Section A, Section B and Section C. The intended marks for questions or parts of questions are given in brackets [ ]. ---------------------------------------------------------------------------------------------------------------- SECTION A 14 MARKS Question 1 (i) The labelled _____________ are used as probe in Western Blotting technique. [1] (ii) During gel electrophoresis, DNA molecules move towards the __________ electrode. [1] (iii) The nitrogenous base that has double rings is: [1] (iv) (a) Cytosine (b) Guanine (c) Thymine (d) Uracil A plant geneticist is studying the possibility of combining desirable traits from two different plant species. He is particularly interested in developing a hybrid plant that combines disease resistance from one species with high yield potential from another species. [1] Name the technique that can be used by the plant geneticist to develop the hybrid plant. (v) Give a reason for the following. (a) A haploid plant obtained by androgenesis produces viable gametes by meiotic division. [1] --------------------------------------------------------------------------------------------------------------ISC SPECIMEN QUESTION PAPER 2024 1

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