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प्रश्न
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उत्तर
Features of DNA:
(a) DNA consists of two strands which are spirally arranged around an axis. This is called a double helical arrangement.
(b) Each DNA strand is made up of nitrogenous bases, pentose sugar and phosphate.
(c) Sugars are pentose type; bases are adenine, guanine, cytosine and thymine.
(d) Both strands are connected with hydrogen bonds. There are two bonds between adenine and thymine and three bonds between guanine and cytosine.
(e) In the DNA, bases are inside and sugars are outside and two sugars are connected with phosphoric acid.
(f) Each DNA strand replicates and from each replicated DNA a new DNA is formed. This is called replication of DNA.
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संबंधित प्रश्न
Fill in the blank:
DNA acts as director of ______ synthesis.
State whether the following sentence is true or false:
Each spiral of the DNA has 12 nucleotides.
State whether the following sentence is true or false:
In any specimen of DNA, the total molar amount of A + G = T+ C.
Write the functional activity of the following structure:
DNA
Multiple Choice Question
DNA structure was discovered by:
Write the functions of DNA.
In what year did Watson, Crick, and Wilkins receive the Nobel Prize in Physiology or Medicine for DNA research?
How many hydrogen bonds link guanine and cytosine in the DNA double helix?
What is the approximate genome size of the human haploid genome?
Bacteriophage λ (lambda) has a genome of approximately how many base pairs?
