Question

Kappa particles were discovered by

• A. Correns
• B. Sonneborn
• C. Rhoades
• D. Bycott et al.

Answer 1

Answer: (B)

Sonneborn

One of the most striking and spectacular cases of cytoplasmic inheritance occurs in Paramecium aurelia. Sonneborn reported that some strains contain kappa particles in the cytoplasm and are known as “Killers “.

Kappa particle is a self-replicating unit. Paramecium aurelia have 2 types of strain, Sensitive and Killer strain. In a killer strain, growth and replication of Kappa particles occur which releases a toxin called Paramecin.

So, the correct answer is 'Sonneborn'.