Replication — Science definition
Copying the DNA, with each strand acting as a template for its partner, so that each chromosome becomes two identical joined copies.
Where it is taught
- The Cell Cycle & Mitosis — Genes, Cell Division & Heredity, Life Science & Scientific Inquiry, Grade 7
In use
That copying is replication, and it produces for each chromosome two identical copies joined together, called sister chromatids.
The Cell Cycle & Mitosis
Questions using replication
Problem 1
Does DNA replication mean each daughter must have eight chromosomes in a four-chromosome model?
Answer and explanation
No. Proper separation gives each daughter the original four-chromosome set; copying DNA is not permanent doubling of each daughter’s set.