The term "complex trait" implies that

Question

Quizplus · Accepted Answer

Complex traits, such as mental disorders, are influenced by multiple genes interacting with environmental factors. Therefore, option D, which states that mental disorders or behavioural traits are influenced by many genes in interaction with environmental factors, best captures the definition of a complex trait. Option A is incorrect because although genes can interact, they do not do so in isolation, and other factors such as the environment can play a role in the manifestation of these behaviours. Option B is incorrect because while environmental factors can influence the expression of genes, they do not result in gene mutation. Option C is incorrect because while the environment can be influential, it is not necessarily more influential than genes in the development of complex behaviours.

The Term "Complex Trait" Implies That