Maya and Elena are identical twins. Maya says to Elena, "Since we share 100% of our genetic material, it's weird that you have developed such strong, muscular calves from training for marathons and have a deep suntan, while my legs are much less muscular and my skin is very pale."
Elena replies, "Well, Maya, our genetic code is only a blueprint. The way we actually look and perform depends on how our lives shape us."
Using your knowledge of genotype and phenotype, explain Maya's and Elena's comments.
Practise AQA A Level Psychology Approaches in Psychology with exam-style questions for A Level Psychology. 248 questions covering Learning approaches, Cognitive approach, Biological approach, Psychodynamic approach (A-level only), Humanistic Psychology (A-level only), and Comparison of approaches (A-level only), matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.