Final answer:
The gender ratio is not always balanced and is influenced by various factors, including cultural ones. It is not constant across all societies and is not solely determined by genetics.
Step-by-step explanation:
The student is inquiring about the accuracy of certain statements regarding the gender ratio in human populations:
- a) False: The gender ratio is not always balanced. It can vary due to a complex interplay of biological, environmental, cultural, and socioeconomic factors. Thus, the statement 'The gender ratio is always balanced' is not true.
- b) True: The gender ratio can indeed be influenced by cultural factors such as societal norms, government policies, and economic conditions.
- c) False: The gender ratio is not constant across all societies as it can be affected by the aforementioned factors, leading to significant variations among different populations.
- d) False: While genetics are a fundamental component in determining gender at birth, the gender ratio is not solely determined by genetics since it is subject to change due to mortality rates, migration, and cultural practices