Solution:1) Yes, Dualism refer to economic and social divisions in an economy, such as difference in the level of technology between sectors or regions, differences in the degree of geographic development and differences in social customs and attitudes.
2) Yes, the developing countries in the early stage of development experience dualism, which have implications for future pattern & pave of development.
Note: - The theory of dualism in economic is the idea that two separate economic and social worlds coexist, and that the difference between them tends to increase over time. The thoery is often used to describe economic and social structures of developing countries, where there is a modern, capitalist sector and a traditional sector.