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Inheritance & EvolutionIntroduction

The Blueprint of Life

Part of DNA Genome · GCSE GCSE Biology revision

This introduction covers The Blueprint of Life within DNA Genome for GCSE Biology. DNA structure, function, and the human genome It is section 1 of 15 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 1 of 15

Practice

17 questions

Recall

12 flashcards

The Blueprint of Life

Imagine a library containing every instruction needed to build and run your body — from your eye colour to how tall you'll grow. This "library" exists in almost every cell in your body. It's called your genome, and it's written in a chemical language called DNA. Just 4 "letters" (A, T, C, G) combine in different orders to create all the diversity of life on Earth!

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Structure of DNAWhy Study the Genome?Explore: DNA Structure

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