Having completed Unit 3, your understanding of biology has grown immensely. It is now time to explore the magnificence of life at the molecular level and how it continues to exist on this planet. Hopefully you will come to appreciate how molecules of DNA ultimately underpin the existence of life in all its various forms. In addition you will examine how gene technologies are expanding and are at the frontier of transforming human existence. These are indeed exciting times. It has been said that "your generation could very well be the last to die or the first to live forever". Hmmm... I wonder which it is and how prophetic it will be.

Unit 4 consists of the following areas of study: 1. Heredity and 2. Changes over time.

Below are the links to the various pages relevant to Unit 4. If you add a new page and you think it deserves to be a new section make sure that you put a link to it either on this page or somewhere else.

Course info
In this section you will find info about the course timeline, including when SAC are likely to occur. Check this section regularly.

A range of tasks and activities for you to do and contribute towards.

Web resources
Links to useful sites that are relevant to the course.

biol 4 faq (nsfaq)
This is the place where you can ask questions and are also able to answer each others queries. Make use of this, it will make a difference!

Improving your biology skills
You need to be proficient in a number of different skills. Here you will find useful advice as well as have the opportunity to improve them.

Classroom stuff
Materials used in class presentations can be accessed here.

Info and queries about SACs

Original copies and solutions to various class activities and homework tasks.

Exam revision
Ask questions in the lead up to the exam and give advice to each other.