BIOLOGY
STRUCTURE OF NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It’s very stable so realey changes even between generations so it rarely muates
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The two starnds are joined by only hydrogen bonds which allows seperepation during replication or protein synthesis
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It can carry a lot of genetic information becasue it is big
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by having the base pairings within the helix the genetic information is protected from corruption by chemical and physical forces
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Base pairings allows DNA to replicate and to transfer information as mRNA
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Detailed explanation-1: -During transcription, the DNA of a gene serves as a template for complementary base-pairing, and an enzyme called RNA polymerase II catalyzes the formation of a pre-mRNA molecule, which is then processed to form mature mRNA (Figure 1).
Detailed explanation-2: -This means that each of the two strands in double-stranded DNA acts as a template to produce two new strands. Replication relies on complementary base pairing, that is the principle explained by Chargaff’s rules: adenine (A) always bonds with thymine (T) and cytosine (C) always bonds with guanine (G).
Detailed explanation-3: -DNA winds into a double helix, with hydrogen bonding between the bases of each strand like the rungs of a ladder. This structure enables DNA to coil so that the long molecule is compact and lots of information can be stored in a small space.
Detailed explanation-4: -During DNA replication and cell division, cells can make two identical copies of DNA from each DNA strand and each daughter cell gets identical copies of DNA. In this way, organisms transmit all the necessary information to their progenies to build themselves from scratch.
Detailed explanation-5: -Together, transcription and translation are known as gene expression. During the process of transcription, the information stored in a gene’s DNA is passed to a similar molecule called RNA (ribonucleic acid) in the cell nucleus.