How DNA Replicates ItselfDNA is the molecule that contains the genetic code of all living things. It is composed of two strands of nucleotides that twist into a double helix.
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Here are some key notes on DNA replication for Class 12:
- Process Overview: DNA replication occurs during the S phase of Interphase, where the DNA molecule makes an exact copy of itself2.
- Initiation: It starts at a specific point called the origin of replication, where the double helix unwinds and separates4.
- Enzymes Involved: Key enzymes include helicases (which unwind the DNA), DNA polymerase (which synthesizes new strands), and ligases (which join DNA fragments)5.
- Steps of Replication: The process involves initiation, elongation (synthesis of new strands), and termination5.
These notes provide a comprehensive overview of DNA replication suitable for Class 12 biology students.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.· DNA replication starts at a point called origin (ori). · A unit of replication with one origin is called a replicon. · During replication, the 2 strands unwind and separate by breaking H-bonds in presence of an enzyme, Helicase.www.bankofbiology.com/2020/07/molecular-basis-…DNA replication takes place at interphase before mitosis or meiosis begins. DNA replication is the process during which a DNA molecule makes an exact copy (replica) of itself. The double helix unwinds. Weak hydrogen bonds between nitrogenous bases break and two DNA strands unzip (separate).mycourses.co.za/dna-replication-and-its-significanc… DNA replication is the process of copying itself synthesizing two new identical strands of DNA. DNA replicates during the S phase of Interphase during the Cell Cycle. It replicates to prepare for cell division (mitosis). DNA replication takes place BEFORE a cell divides into two new cells.www.biologybynapier.com/uploads/4/0/3/7/403763…DNA replication is the basis of biological inheritance where the DNA is copied with the help of various enzymes, such as helicases, topoisomerases, DNA polymerase and DNA ligase. In a bacterial cell, DNA replication begins at a specific point called the ‘origin of replication’.lab.nextgurukul.in/wiki/concept/cbse/class-12/biolo…In the process of DNA replication, the DNA makes multiple copies of itself. It is a biological polymerisation, which proceeds in the sequence of initiation, elongation, and termination. It is an enzyme-catalysed reaction. DNA Polymerase is the main enzyme in the replication process. Following are the important steps involved in DNA replication:
byjus.com/biology/dna-replication-machinery-enzy…DNA replication and its significance Grade …
Jan 14, 2024 · On this page you will find DNA replication and its significance Grade 12 Life Sciences Notes under Nucleic acids, which includes revision activities with questions and answers …
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Sep 26, 2024 · DNA, or Deoxyribonucleic Acid, is the molecule responsible for carrying genetic information in all living organisms. It is a long chain made up of deoxyribonucleotides, and its length is determined by the number of …
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Explain the process of DNA replication with the help of a …
DNA replication is the phenomenon in which a duplicate copy of DNA is synthesised. The steps involved in the process of DNA replication are as follows: DNA replication occurs in S-phase of …
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DNA replication occurs when a cell needs DNA before its division so that the new daughter cells can also get a copy of DNA. Specifically, in a eukaryotic cell, it occurs before mitosis or …
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Jul 27, 2020 · The Machinery and Enzymes for Replication · DNA replication starts at a point called origin (ori). · A unit of replication with one origin is called a replicon. · During replication, the 2 …
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Oct 21, 2021 · Notes of Class 12, Biology DNA replication - Study Material. Page 1 : WDNA replication: |i, 18, he process of producing two identical replicas from one original DNA molecule, , , , SUL, , , , , Loading stand | i., ‘, NINA primar s …
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May 2, 2013 · The process of synthesis of DNA molecule from preexisting dna is called dna replication. NA replication may occur by following process: 1.semi-conservative replication
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DNA replication is the basis of biological inheritance where the DNA is copied with the help of various enzymes, such as helicases, topoisomerases, DNA polymerase and DNA ligase. In a …
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May 6, 2024 · Definition DNA replication is the process of producing two identical replicas of DNA from one DNA molecule. DNA replication occurs during the S Phase of the Interphase of cell …
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At its most basic level, DNA replication is the operation of DNA polymerases producing a complementary DNA strand to the original template strand. To manufacture DNA, DNA …
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Nov 2, 2023 · DNA replication is the process of producing two identical copies of DNA from one original DNA molecule. DNA is made up of millions of nucleotides, which are composed of …
CBSE Class 12-science Biology Topic Notes for DNA Replication
Get revision notes for DNA Replication - CBSE Class 12-science Biology and prepare well for your exam. Revise Biology chapters and score more with TopperLearning.
DNA replication - Online Biology Notes
Jun 14, 2017 · DNA replication is fundamental process occurring in all living organism to copy their DNA. The process is called replication in sense that each strand of ds DNA serve as template …
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Class 12 biology Chapter 6 Notes explain the molecular basis of inheritance. By referring to these Class 12 biology Chapter 6 Notes, students can understand the key concepts in the structure …
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Dec 26, 2024 · Nucleotides are bonded together by DNA polymerase to create the new complementary DNA strands. Leading & lagging strands. DNA polymerase can only build the …
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Semi-conservative method of DNA replication Important points: (i) Most common method of DNA replication. (ii) Takes place in the nucleus where the DNA is present in the chromosomes. (iii) …
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Jan 22, 2025 · The DNA replication process is semiconservative, which results in two DNA molecules, each having one parental strand of DNA and one newly synthesized strand. ...
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DNA is the polymer of deoxyribonucleotides and are composed of nitrogenous base, Pentose sugar, Phosphate. It is a double-helical structure. Complementary bases gets paired up …
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