Introduction
DNA replication and gene expression are two fundamental processes in molecular biology that ensure the continuity and functionality of life.
DNA Replication
DNA replication is the process by which DNA makes an exact copy of itself. This occurs before cell division and ensures that each new cell receives identical genetic information.
Steps of Replication
- DNA unwinds
- Enzymes add complementary bases
- Two identical DNA strands are formed
Gene Expression
Gene expression is the process by which information from a gene is used to create functional products like proteins.
Transcription and Translation
- Transcription creates RNA from DNA
- Translation converts RNA into proteins
Significance
These processes are essential for growth, repair, and maintenance of cells.
Conclusion
Understanding DNA replication and gene expression helps explain how organisms grow and function at a molecular level.