Why Is DNA Replication Said To Be Semi-conservative? - Vedantu

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AnswerQuestion Answers for Class 12Class 12 BiologyClass 12 ChemistryClass 12 EnglishClass 12 MathsClass 12 PhysicsClass 12 Social ScienceClass 12 Business StudiesClass 12 EconomicsQuestion Answers for Class 11Class 11 EconomicsClass 11 Computer ScienceClass 11 BiologyClass 11 ChemistryClass 11 EnglishClass 11 MathsClass 11 PhysicsClass 11 Social ScienceClass 11 AccountancyClass 11 Business StudiesQuestion Answers for Class 10Class 10 ScienceClass 10 EnglishClass 10 MathsClass 10 Social ScienceClass 10 General KnowledgeQuestion Answers for Class 9Class 9 General KnowledgeClass 9 ScienceClass 9 EnglishClass 9 MathsClass 9 Social ScienceQuestion Answers for Class 8Class 8 ScienceClass 8 EnglishClass 8 MathsClass 8 Social ScienceQuestion Answers for Class 7Class 7 ScienceClass 7 EnglishClass 7 MathsClass 7 Social ScienceQuestion Answers for Class 6Class 6 ScienceClass 6 EnglishClass 6 MathsClass 6 Social ScienceQuestion Answers for Class 5Class 5 ScienceClass 5 EnglishClass 5 MathsClass 5 Social ScienceQuestion Answers for Class 4Class 4 ScienceClass 4 EnglishClass 4 MathsWhy is DNA replication said to be semi-conservative?AnswerVerified592.5k+ viewsHint: DNA replication depends on the complementary base pairing. The Meselson- Stahl experiment confirmed the theory that DNA replication is semi- conservative.Complete step by step answer: DNA replication is semi-conservative because in the replication process the resulting DNA helix is composed of both a new strand and an old strand. This occurs because of the complementary base pairing, I.e. each nitrogenous base only pairs with its complementary pair. These two strands are identical to the initial double helix. Each strand becomes a template for the synthesis of a new strand.- DNA replication is the process of duplication of DNA.- DNA replication to be semi- conservative is confirmed by the Meselson- Stahl experiment in 1958.- In the semiconservative model of DNA, each strand of DNA serves as a template for the making of a new complementary strand, resulting in two DNA molecules with one old and one new strand.- Even though three different models of DNA replication were proposed, the semi- conservative one was most popular among scientists of that time. The other two models were named as conservative and dispersive. - Meselson and Stahl carried out their experiment of DNA replication in E. coli bacteria for many generations.- Analyzation of DNA from the first four- generation of E. coli confirmed that DNA replication is closest to the semi- conservative model, rather than the other two.- Though the experiment was conducted on E. coli, the theory of DNA replication being semi- conservative is true universally.Note: In the semi-conservative process of DNA replication, the resultant DNA helix is composed of both a new and an old strand, and both are identical to the initial helix. The reason for the semiconductive nature of DNA replication is that the nitrogenous bases can only pair with its complementary partner I.e. adenine pair with thymine and cytosine pairs with guanine.Recently Updated PagesBasicity of sulphurous acid and sulphuric acid areMaster Class 12 English: Engaging Questions & Answers for SuccessMaster Class 12 Social Science: Engaging Questions & Answers for SuccessMaster Class 12 Maths: Engaging Questions & Answers for SuccessMaster Class 12 Economics: Engaging Questions & Answers for SuccessMaster Class 12 Physics: Engaging Questions & Answers for SuccessBasicity of sulphurous acid and sulphuric acid areMaster Class 12 English: Engaging Questions & Answers for SuccessMaster Class 12 Social Science: Engaging Questions & Answers for SuccessMaster Class 12 Maths: Engaging Questions & Answers for SuccessMaster Class 12 Economics: Engaging Questions & Answers for SuccessMaster Class 12 Physics: Engaging Questions & Answers for Success

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