Hi - just wondering if you have model answers for the "Predicting phenotype ratios" worksheet please?
Gene Linkage 1 (2025)Thank you David; it is a more prevalent issue throughout the topics. Obviously teachers are responsible for researching and checking their resources carefully, but I have regularly been misled with the resources on this site (drawing biological molecules...
Conservation of biodiversity (2025)Hi Keely,Thanks for your patience. I have posted model answers to these IB style questions, and included a few notes to explain the answers, as these are a bit tricky.Best wishes, David
HL Redox reactions and NAD (2025)Dear Lucinda, Thanks for your comment, I've noted your point which is a helpful reminder, and I'll update this activity very soon. Best regards, David.
Conservation of biodiversity (2025)Dear Lauren, Thanks for your comment. Typo fixed.Best wishes, David
Intro to gene expression (2025)Dear Anita, Thanks for your comment about the teacher's notes on the questions above. I have just reviewed them and made a few improvements to the clarity. You were right there was a little ambiguity in places. This topic is a bit tricky...
C2.1 Chemical signalling - written taskI think there are mistakes in the model answers and the teacher's note in response to the questions above.
C2.1 Chemical signalling - written taskQ5D spelling mistake
Intro to gene expression (2025)I am still looking for the model answers for the IB Style Questions ReDOX RxN Thanks
HL Redox reactions and NAD (2025)
Håkan
In the third row, "Major insertions or deletions cause,....", is incomplete.
D1.3 Mutations - 5 Essential revision points