In Paramecium, genetic information is stored in

The correct answer is micronucleus.

Paramecium exhibits nuclear dimorphism, meaning it contains two different types of nuclei within a single cell: a macronucleus and a micronucleus. Each type of nucleus has distinct structure and function:
1. Micronucleus: The micronucleus is small, diploid, and contains the complete, unaltered genome. It is responsible for storing the hereditary/genetic information and is active during sexual reproduction (conjugation) to ensure genetic transmission to the next generation.
2. Macronucleus: The macronucleus is large and polyploid. It control the day-to-day metabolic activities, growth, and vegetative functions of the cell, but does not participate directly in the transmission of hereditary traits during sexual reproduction.

Therefore, the genetic information that is passed on to the offspring and serves as the primary repository of hereditary data is stored in the micronucleus.