Biology Model Notes - Class 12
Model Topic 1: DNA Replication (Molecular Basis of Inheritance)
Topic: Molecular Basis of Inheritance
Summary:
- DNA replication is semi-conservative in nature.
- Enzymes involved: Helicase (unwinds DNA), DNA Polymerase (adds nucleotides).
- Replication occurs in 5' to 3' direction.
- Leading strand is continuous; lagging strand is formed in Okazaki fragments.
Diagram Idea:
- Draw DNA double helix splitting into two.
- Show enzyme activity and arrows indicating base addition.
Model-Making Idea:
- Use colored threads, beads, or paper to show base pairing.
- Label with A-T and G-C pairing.
- Use cardboard or thermocol for helix support.
Keywords:
DNA structure, semi-conservative, Okazaki fragments, NEET biology, replication fork
Uploaded by: Kunal Yede | Date: June 29, 2025
Page 1
Model Topic 1: DNA Replication (Molecular Basis of Inheritance)
Topic: Molecular Basis of Inheritance
Summary:
- DNA replication is semi-conservative in nature.
- Enzymes involved: Helicase (unwinds DNA), DNA Polymerase (adds nucleotides).
- Replication occurs in 5' to 3' direction.
- Leading strand is continuous; lagging strand is formed in Okazaki fragments.
Diagram Idea:
- Draw DNA double helix splitting into two.
- Show enzyme activity and arrows indicating base addition.
Model-Making Idea:
- Use colored threads, beads, or paper to show base pairing.
- Label with A-T and G-C pairing.
- Use cardboard or thermocol for helix support.
Keywords:
DNA structure, semi-conservative, Okazaki fragments, NEET biology, replication fork
Uploaded by: Kunal Yede | Date: June 29, 2025
Page 1
