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Video: Double Helix Structure of DNA Video Lecture - NEET
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| 1. What is the double helix structure of DNA? |  |
Ans. The double helix structure of DNA refers to the twisted ladder-like shape that DNA molecules form. It consists of two strands that are intertwined around each other, forming a spiral staircase-like structure.
| 2. How was the double helix structure of DNA discovered? | |
Ans. The discovery of the double helix structure of DNA is credited to James Watson and Francis Crick, along with the help of Rosalind Franklin and Maurice Wilkins. They used X-ray crystallography data obtained by Franklin to propose the double helix structure in 1953.
| 3. What are the components of the double helix structure of DNA? | |
Ans. The double helix structure of DNA is composed of nucleotides, which are the building blocks of DNA. Each nucleotide consists of a phosphate group, a sugar molecule called deoxyribose, and one of four nitrogenous bases: adenine (A), thymine (T), cytosine (C), or guanine (G).
| 4. How does the double helix structure of DNA contribute to its function? | |
Ans. The double helix structure of DNA plays a crucial role in its function. It allows for the replication of DNA, as the two strands can separate and serve as templates for the synthesis of new DNA strands. It also provides stability to the genetic material and enables the storage and transmission of genetic information.
| 5. What is the significance of understanding the double helix structure of DNA? | |
Ans. Understanding the double helix structure of DNA is essential in various fields of biology and medicine. It helps in comprehending the mechanisms of DNA replication, transcription, and translation, which are fundamental processes in cell biology. Additionally, knowledge of the double helix structure aids in studying genetic disorders, developing genetic engineering techniques, and advancing medical treatments.
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