Question

Ageing in mammals including man may be due to

• A. Adverse changes in the environment
• B. Interaction between hereditary factor genes and the environment
• C. Mutation and stress
• D. All of the above

Answer 1

Answer: (D)

All of the above

The senescence process of the innate immune system is environmentally driven. Ageing affects physiological functions and can be defined as the accumulation of damage in molecules, cells and tissues over a lifetime, this often decreases an organism's capacity to maintain homeostasis in stress conditions and entails a greater risk for many diseases. Ageing is a multifactorial process that is determined by genetic and environmental factors. Thus, the correct answer is option D.