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Tamil Nadu Board of Secondary EducationHSC Science Class 12

HSC Science Class 12 - Tamil Nadu Board of Secondary Education Question Bank Solutions

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Discuss which wood is better for making furniture.

[10] Economically Useful Plants and Entrepreneurial Botany
Chapter: [10] Economically Useful Plants and Entrepreneurial Botany
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Match list I with list II

List I List II
A. A pair of chromosomes extra with diploid i) monosomy
B. One chromosome extra to the diploid ii) tetrasomy
C. One chromosome was lost from diploid iii) trisomy
D. Two individual chromosomes lose from diploid iv) double monosomy
[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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Match list I with list II.

  List I   List II
A. A pair of chromosomes extra with diploid i) monosomy
B. One chromosome extra to the diploid ii) tetrasomy
C. One chromosome loses from diploid iii) trisomy
D. Two individual chromosomes lose from diploid iv) double monosomy
[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
Concept: undefined >> undefined

Match list I with list II

  List I   List II
A. A pair of chromosomes extra with diploid i) monosomy
B. One chromosome extra to the diploid ii) tetrasomy
C. One chromosome loses from diploid iii) trisomy
D. Two individual chromosomes lose from diploid iv) double monosomy
[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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The point mutation sequence for transition, transition, transversion, and transversion in DNA are

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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DNA dependent RNA polymerase catalyzes transcription on one strand of the DNA which is called the

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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Initiation codon is

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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DNA element with ability to change position is called

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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During DNA replication Okazaki fragments are used to elongate

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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Write the steps involved in the molecular mechanism of DNA recombination with a diagram.

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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What is DNA repair?

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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EcoRI cleaves DNA at

[4] Principles and Processes of Biotechnology
Chapter: [4] Principles and Processes of Biotechnology
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An analysis of chromosomal DNA using the southern hybridisation technique does not use

[4] Principles and Processes of Biotechnology
Chapter: [4] Principles and Processes of Biotechnology
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An antibiotic gene in a vector usually helps in the selection of

[4] Principles and Processes of Biotechnology
Chapter: [4] Principles and Processes of Biotechnology
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Is their any possibilities to transfer a suitable desirable gene to the host plant without a vector? Justify your answer.

[4] Principles and Processes of Biotechnology
Chapter: [4] Principles and Processes of Biotechnology
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Compare the various types of Blotting techniques.

[4] Principles and Processes of Biotechnology
Chapter: [4] Principles and Processes of Biotechnology
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The prevention of large scale loss of biological interity

[5] Plant Tissue Culture
Chapter: [5] Plant Tissue Culture
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Give four examples of plants cultivated in commercial agroforestry.

[8] Environmental Issues
Chapter: [8] Environmental Issues
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IUCN red list categories has developed criteria for threatened species. The criteria ‘C’ refers to

[8] Environmental Issues
Chapter: [8] Environmental Issues
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Assertion: Genetic variation provides the raw material for selection

Reason: Genetic variations are differences in genotypes of individuals.

[9] Plant Breeding
Chapter: [9] Plant Breeding
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