IGCSE Biology Sample Assessment Materials (SAMs) Edexcel IGCSE in Biology (4BI0) First examination 2011 Edexcel, a Pearson company, is the UK's largest awarding body, offering academic and vocational qualifications and testing to more than 25,000 schools, colleges, employers and other...
Chromosomes and Sex: Grade 9 Understanding for IGCSE Biology3.26 3.27 Having spent the last day or two writing material about one of the hardest topics in the IGCSE Biology specification (DNA and Protein Synthesis), I am going to write today about something much simpler. You need to understand...