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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

The fact that a purine base always paired through hydrogen bonds with a pyrimidine base leads to, in the DNA double helix ______.

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प्रश्न

The fact that a purine base always paired through hydrogen bonds with a pyrimidine base leads to, in the DNA double helix ______.

विकल्प

  • uniform width throughout DNA

  • uniform length in all DNA

  • the semiconservative nature

  • the antiparallel nature

MCQ
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उत्तर

The fact that a purine base always paired through hydrogen bonds with a pyrimidine base leads to, in the DNA double helix uniform width throughout DNA.

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अध्याय 6: Molecular Basis of Inheritance - MULTIPLE CHOICE QUESTIONS [पृष्ठ ३६]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 12
अध्याय 6 Molecular Basis of Inheritance
MULTIPLE CHOICE QUESTIONS | Q 4. | पृष्ठ ३६

संबंधित प्रश्न

Group the following as nitrogenous bases and nucleosides:

Adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine.


If a double stranded DNA has 20 per cent of cytosine, calculate the per cent of adenine in the DNA.


Which property of DNA double helix led Watson and Crick to hypothesise semi-conservative mode of DNA replication? Explain.


If a double stranded DNA has 20% of cytosine, what will be the percentage of adenine in it?


A nucleoside differs from a nucleotide. It lacks the ______.


Both deoxyribose and ribose belong to a class of sugars called ______.


What is the nature of the strands of the DNA duplex?


If 30 percent of an organism’s DNA is thymine, then ______.


H-bonds between Cytosine and Guanine are ______.


By which bonds the purine and pyrimidine pairs of Complementary Strands of DNA held together?


There is no DNA in ______.


DNA is made of two chains that twist about one another in the shape of a ______.


Which of the following is a structural subunit of DNA?


A peptide chain assumes secondary structure through the formation of ______.


Which of the following is a purine?


A short piece of DNA, having 20 base pairs, was analyzed to find the number of nucleotide bases in each of the polynucleotide strands. Some of the results are shown in the table.

  Number of nucleotide bases
  Adenine Cytosine Guanine Thymine
Strand 1 4 4    
Strand 2   5    

How many nucleotides containing Adenine were present in strand 2?


What is the smallest part of a DNA molecule that can be changed by a point mutation?


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