This diagram covers Explore: How DNA Copies Itself within DNA Genome for GCSE Biology. DNA structure, function, and the human genome It is section 5 of 15 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.
🔁 Explore: How DNA Copies Itself
Before a cell divides, its DNA must be copied so each new cell gets a full set. The same hero diagram tells a second story — tap each dot to see how.
Remember: 1. DNA unzips → 2. Each strand is a template → 3. New nucleotides pair by complementary base pairing → 4. Two identical copies
Practice questions for DNA Genome
Which of the following base pairing rules is correct for DNA?
What are the four nitrogenous bases found in DNA?
Quick recall flashcards
What is a gene?
A section of DNA that codes for the production of a specific protein. The sequence of bases in the gene determines which protein is made.
What is an allele?
A different version of the same gene. For example, the gene for eye colour has alleles for brown eyes and blue eyes. Alleles arise due to mutations in the original gene.