Step 1: Understanding the Concept:
A 'Dominant Caste' refers to a caste group that wields significant economic and political power in a particular region and holds a high ritual status.
Step 2: Detailed Explanation:
1. M.N. Srinivas: He introduced this concept based on his studies of village life in Rampura, Karnataka.
2. Characteristics: According to Srinivas, a caste is dominant if it possesses numerical strength, economic power (land ownership), political power, and a relatively high position in the local hierarchy.
3. Significance: This concept helped sociologists understand the changing power dynamics in rural India after independence and land reforms.
4. Others: Ambedkar focused on the abolition of caste. Ghurye is the father of Indian sociology. Dumont is known for the concept of 'Homo Hierarchicus'.
Step 3: Final Answer:
The concept of 'Dominant Caste' was proposed by M.N. Srinivas.