« Back to subjects

HSC Biology

Sign up now   $99.00 / year

2 | Blueprint of life

4: The structure of DNA can be changed and such changes may be reflected in the phenotype of the affected organism

Lesson 1 | DNA and polypeptide synthesis

  • Describe the process of DNA replication and explain its significance

  • Outline using a simple model, the process by which DNA controls the production of polypeptides

  • Perform a first-hand investigation or process information from secondary sources to develop a simple model for polypeptide synthesis

Lesson 2 | Beadle and Tatum

  • Explain the relationship between proteins and polypeptides

  • Analyse information from secondary sources to outline the evidence that led to Beadle and Tatum’s ‘one gene – one protein’ hypothesis and to explain why this was altered to the ‘one gene – one polypeptide’ hypothesis

Lesson 3 | Mutations

  • Explain how mutations in DNA may lead to the generation of new alleles

  • Discuss evidence for the mutagenic nature of radiation

  • Process information to construct a flowchart that shows that changes in DNA sequences can result in changes in cell activity

Lesson 4 | DNA and evolution

  • Explain how an understanding of the source of variation in organisms has provided support for Darwin’s Theory of evolution by natural selection

  • Process and analyse information from secondary sources to explain a modern example of ‘natural’ selection

  • Describe the concept of punctuated equilibrium in evolution and how it differs from the gradual process proposed by Darwin

  • Process information from secondary sources to describe and analyse the relative importance
    of the work of:
    – James Watson
    – Francis Crick
    – Rosalind Franklin
    – Maurice Wilkins

    in determining the structure of DNA and the impact of the quality of collaboration and communication on their scientific research

« Back to subjects
  • HSCStudy Lab Lessons

    59 Lessons

    Lessons by expert teachers that cover the NSW HSC Biology Syllabus comprehensively.

  • HSCStudy Lab Quizzes

    59 Practice questions

    59 lesson quizzes that include a variety of questions. This course also includes 15 focus level and 3 module level tests, as well as a comprehensive end of course practice exam.

  • HSCStudy Lab videos

    59 Hours of video

    Videos that fully explain complex biology questions through animation, practical experiments, and tutorials.

  • HSCStudy Lab interactives

    29 Interactive activities

    Interactive activities that help you explore and understand key syllabus dot point as well as additional resources.

Sign up for HSC Study Lab today!

Sign up now
HSC Students