Calculate recombination frequency
A linkage cross in a DP Biology data-response lesson gives 18 recombinant offspring from 200 total offspring. Calculate the map distance between the two genes. Enter the answer and choose the interpretation that best matches the HL Biology evidence.
Worked practice: biological evidence and answer
Use the labelled biological evidence first, then connect it to the final answer.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.