Respuesta :

Question Options:

1) longevity

2) susceptibility

3) harmful

4)high-risk

Answer: SUSCEPTIBILITY GENES.

Susceptibility genes are a theoretical unit of heredity of living organisms that are vulnerable or more or most likely to be exposed to the chance of being attacked by external or internal forces.

Based on susceptible genes, an individual is more likely to develop some diseases due to their genetic makeup.

In this case, Dr Singh is studying susceptible genes.