DNA Replication & Enzymes
Before a cell can divide, it must make an exact copy of its DNA using a series of specialized enzymes.
Why is DNA replication necessary before cell division?
What is DNA Replication & Enzymes?
"DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule."
Choose the correct option to complete the statement. DNA is a polymer forming a ____
A mutation changes the order of bases in a gene. What may happen next?
Which characteristic is most likely to be influenced by both genes and the environment?
Which option correctly completes the statement? In females the sex chromosomes are ____
Genetic Copying
The double helix is "unzipped" to expose the two individual strands.
Complementary bases (A-T, C-G) are matched to the existing strands.
Two identical double-stranded DNA molecules are formed.
This process ensures that every cell in the body contains the same genetic instructions.
While you don't need to name enzymes like Helicase or Polymerase at GCSE, you must know that the process is enzyme-driven and results in identical copies.
Want to improve faster?
The fastest way to improve your grade is to practise exam-style questions, identify your gaps, and focus only on what you don't know.