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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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What are some solutions to toxic dumping in our oceans?

[13] Environmental Issues
Chapter: [13] Environmental Issues
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List the various menstrual disorders.

[2] Human Reproduction
Chapter: [2] Human Reproduction
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XO type of sex determination and XY type of sex determination are examples of ____________.

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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ZW-ZZ system of sex determination occurs in

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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Which of the following is incorrect regarding ZW-ZZ type of sex determination?

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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What is haplodiploidy?

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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Distinguish between heterogametic and homogametic sex determination systems.

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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What is Lyonisation?

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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Differentiate Intersexes from Supersexes.

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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What is male heterogamety?

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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Brief about female heterogamety.

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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Explain the mode of sex determination in honeybees.

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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The total number of nitrogenous bases in human genome is estimated to be about ____________.

[5] Molecular Genetics
Chapter: [5] Molecular Genetics
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Mention any two ways in which single nucleotide polymorphism (SNPs) identified in human genome can bring revolutionary change in biological and medical science.

[5] Molecular Genetics
Chapter: [5] Molecular Genetics
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Differentiate between

Primary and secondary immune responses

[8] Immunology
Chapter: [8] Immunology
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Autoimmunity is a misdirected immune response. Justify.

[8] Immunology
Chapter: [8] Immunology
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The purpose of biological treatment of waste water is to ______.

[9] Microbes in Human Welfare
Chapter: [9] Microbes in Human Welfare
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All populations in a given physical area are defined as ________.

[11] Organisms and Populations
Chapter: [11] Organisms and Populations
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Give the diagnostic characters features of a Biome?

[11] Organisms and Populations
Chapter: [11] Organisms and Populations
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Classify the aquatic biomes of Earth.

[11] Organisms and Populations
Chapter: [11] Organisms and Populations
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