Agronomy and Horticulture, Department of
DNA and Chromosome Structure
Document Type
Learning Object
Date of this Version
2021
Citation
Plant and Soil Sciences eLibrary (PASSeL) Lessons.
Abstract
Abstract/Overview
This lesson describes the chemical structure of DNA and how the structure relates to genes and chromosomes. The replication of DNA prior to cell division to create the chromatids of replicated chromosome is illustrated, showing how the main DNA replicating enzymes work together in living cells.
Objectives
At completion of this lesson you should be able to:
- Detail the molecular nature of a gene.
- Recognize when and where replication of the DNA that is packaged in an organism’s chromosome is happening for growth, maintenance, and reproduction.
- Describe how chromosome replication speed can be increased with multiple origins of replication and bidirectional replication.
- Explain the role of each of the primary DNA replicating enzymes in conducting replication of a chromosome. Include the role of these enzymes in ensuring the accuracy of the replication process.
- Predict how the semiconservative replication of a double stranded DNA will proceed given the structure of the molecule and the specific function of the DNA replicating enzymes.
Modules
COinS
Comments
Copyright 2021, the authors. Used by permission.
This lesson creation was supported in part by Iowa State University Libraries Open Educational Resources initiative.