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A gene is a section of DNA or RNA that codes for a protein. Alleles are different versions of the gene.  For example, if a gene coding for a particular enzyme mutated, then there would be two alleles o...

Firstly, make sure that you understand and can remember the plot of the book. If you have not made summarising notes throughout the year, do not worry. Although your personal notes are better as they a...

Longitudinal studies are those which are carried out over a long period of time. Longitudinal studies can be problematic because, over time, participants may drop out. This is an issue because it leave...

That depends an awful lot on the question itself. Source questions can seem really scary, especially if you haven’t seen the source before, but there are a few little tricks which make it a lot more ma...

It is vital that you look at who wrote both primary and secondary sources.

You probably know from GCSE that primary sources may be heavily influenced by all manner of characteristics belo...