Liam and Noah are identical twins. Liam says to Noah, "It doesn't make sense. If we share the exact same DNA, why are you two inches taller than me and so much better at playing the violin?"
Noah replies, "Well, Liam, sharing the same genetic blueprint doesn't mean we turn out exactly the same."
Using your knowledge of genotype and phenotype, explain Liam's and Noah's comments.
48 exam-style questions on AQA A Level Psychology Biological approach. Each one has a worked solution and a mark scheme showing where the marks go.