ANGELICSCALLIWAGS

Genetics: Cell division – Meiosis

We are currently working through the specification for an IGCSE in Biology.  The following is copied straight from that specification and is all the information we need to know about meiosis: Understand that division of a cell by meiosis produces four cells, each with half the number of chromosomes, and that this results in the formation…

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Genetics: Cell division – Mitosis

We are currently working through the specification for an IGCSE in Biology.  The following is copied straight from that specification and is all the information we need to know about mitosis: Understand that division of a diploid cell by mitosis produces two cells which contain identical sets of chromosomes. Understand that mitosis occurs during growth, repair,…

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Genetics: DNA Replication

We have looked quite extensively at the structure of DNA as well as carrying out a study on the scientists who first discovered its structure and making our own models: The next thing the children needed to know about was DNA replication.  This would be fairly important  for their cell division lessons on Mitosis and Meiosis…

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IGCSE Biology: Genetics

Our biological science is based on the specification of Edexcel for their Biology IGCSE.  My goal is to very gradually work through the specification with the hope of digging a little deeper than is required and letting the children follow areas of interest.  I aim to make this study as hands on as possible and…

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Biology: Genetics – DNA

We have just finished Microbe studies and together we have chosen to look at Inheritance and Genetics next.  Again, I will be using the Edexcel IGCSE specification as guidance.  Our studies will hopefully be in-depth and very hands on before we settle down to answering past exam papers to test how much the children understand.…

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Biology : Extracting Your Own DNA

Actually this post will describe how to extract DNA from a banana, a tomato and from yourself.  The method is similar for all three. Extracting DNA samples I gave the children the choice of extracting DNA from tomatoes, bananas or from themselves.  It is very easy to do requiring nothing more than water, salt, surgical…

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Scientist Study: Watson and Crick

Crick and Watson were 20th century scientists accredited (with help from Franklin and Wilkins) for discovering the structure of DNA (DeoxyriboNucleic Acid), one of the most significant discoveries of that century.  The three men were awarded a nobel prize for discovering the 'secret of life'.  Franklin had died and so missed out, even though it…

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