Tap each dot to reveal the structure and what it does โ close-ups for the key parts.
Remember: DNA = Double helix of nucleotides | A pairs with T, C pairs with G | Gene = section of DNA coding for a protein
This diagram covers Explore: DNA Structure within DNA Genome for GCSE Biology. DNA structure, function, and the human genome It is section 4 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 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.
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.