Write any two chemical differences between DNA and RNA.

DNA RNA Deoxyribonucleic Acid is the abbreviation for Deoxyribonucleic Acid. Ribonucleic Acid is the abbreviation for Ribonucleic Acid. Deoxyribose is the sugar component of DNA. Ribose is the sugar component of RNA. The DNA helix has a B-form helix geometry (A or Z also present). The A-Form helix geometry is found in RNA.

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Intermediate Second Year Botany>Chapter 10 - Molecular Basis of Inheritance>Questions>Q 4

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Define a cistron. Differentiate between monocistronic and polycistronic transcription unit with suitable examples.

Important Questions on Molecular Basis of Inheritance

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Intermediate Second Year Botany>Chapter 10 - Molecular Basis of Inheritance>Questions>Q 5

Recall the experiments done by Frederick Griffith in which DNA was speculated to be the genetic material RNA. Instead of DNA was the genetic material, would the heat killed strain of Pneumococcus have transformed the R strain into virulent strain? Explain.

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Intermediate Second Year Botany>Chapter 10 - Molecular Basis of Inheritance>Questions>Q 6

There is only one possible sequence of amino acids when deduced from a given nucleotides. But a multiple nucleotide sequence can be deduced from a single amino acid sequence. Explain this phenomenon.

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Intermediate Second Year Botany>Chapter 10 - Molecular Basis of Inheritance>Questions>Q 7

A single base mutation in a gene may not always result in loss or gain of function. Do you think the statement is correct? Defend your answer.

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Intermediate Second Year Botany>Chapter 10 - Molecular Basis of Inheritance>Questions>Q 8

A low level of expression of lac operon occurs all the time. Can you explain the logic behind this phenomenon.

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