Each Masterclass focuses on a different exam board (AQA or OCR A) and year group, allowing for detailed guidance and support. Participants can access video recordings of each class for later revision. The topic-based group lessons include explanations and exam-question walk-throughs. I discuss ...
We found no evidence (as would be indicated by cDNA clones or ESTs) in the database for alternative promoter usage among any of the invertebrate Runx genes exam- ined, suggesting that alternative promoters may have evolved in the chordate lineage leading to vertebrates, subsequent to its ...