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 โ tap each dot to see how.
Remember: 1. DNA unzips โ 2. Each strand is a template โ 3. New nucleotides pair by complementary base pairing โ 4. Two identical copies
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.
Practice questions for DNA Genome
Which of the following base pairing rules is correct for DNA?
Describe the structure of 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.