Inheritance & EvolutionKey Facts

Why Study the Genome?

Part of DNA Genome — GCSE Biology

This key facts covers Why Study the Genome? within DNA Genome for GCSE Biology. DNA structure, function, and the human genome It is section 3 of 13 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 3 of 13

Practice

25 questions

Recall

25 flashcards

Why Study the Genome?

Identify genes linked to diseases (e.g., cystic fibrosis, cancer)
Develop personalised medicine based on your DNA
Trace human migration and evolution
Understand relationships between species

Visual: DNA Structure

DNA structure diagram showing double helix, nucleotide components, complementary base pairing A-T and C-G, and hierarchy from nucleus to chromosome to gene to bases

Remember: DNA = Double helix of nucleotides | A pairs with T, C pairs with G | Gene = section of DNA coding for a protein

Keep building this topic

Read this section alongside the surrounding pages in DNA Genome. That gives you the full topic sequence instead of a single isolated revision point.

Structure of DNA From DNA to Protein: Transcription and Translation The Blueprint of Life How It Works: DNA to Protein

Practice Questions for DNA Genome

Which of the following base pairing rules is correct for DNA?

A. A-T and C-G
B. A-C and T-G
C. G-A and C-T
D. T-C and G-A

2 marksfoundation

What are the four nitrogenous bases found in DNA?

4 markshigher

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.

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Structure of DNA

From DNA to Protein: Transcription and Translation