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genetics
What each genetics question is really asking, how to structure the answer, and where the marks are likely to sit.
Two hundred words for two questions means one mechanism explained properly and one disease link that actually demonstrates it, rather than a tour of the field.
The brief asserts that most mutations cause no problem and asks you to work from there. Explaining why that is true is the biology, and the email analogy tells you which distinction matters.
Discussion postGenetics
DQ 1 :Essential structural elements of a functional eukaryotic chromosome
Genetics
Three steps and the third is the hard one. Selecting an element and explaining it is molecular biology; saying what a doctorally prepared nurse does with it is the assignment.