Chromosomes, genes, alleles and mutations

sickle cell anemia by udt007us on flickr

We are about to embark on the last topic of the year!  It’s a great topic – and an important one – all to do with GENETICS.  Here is the syllabus guide: Topic 4 – Syllabus outline

In this first section we need to know what eukaryotic chromosomes are made of, and be able to define the terms gene, allele, genome and gene mutation.  We’ll learn about the disease sickle-cell anemia – how it is caused by substitution of a single base in the gene for making haemoglobin.  This will be a good review of transcription and translation [remember them?] as well.  Here is Mr Taylor’s presentation covering these points.

Click here for an excellent blog post that will help you understand how all this connects together.

Tags: , , , , ,

Leave a Reply