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Inheritance would be extranuclear in cas...

Inheritance would be extranuclear in case of

A

Killer Paramecium

B

Killer Amoeba

C

Euglena

D

Hydra

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The correct Answer is:
**Step-by-Step Text Solution:** 1. **Understanding Extranuclear Inheritance**: Extranuclear inheritance refers to the transmission of genetic material that is not located in the nucleus. This type of inheritance typically involves organelles like mitochondria or chloroplasts, which have their own DNA. 2. **Identifying the Organism**: The question specifically asks for a case where inheritance would be extranuclear. One well-known example of extranuclear inheritance is found in certain strains of Paramecium, particularly the "killer" strains. 3. **Kappa Particles in Paramecium**: Killer strains of Paramecium contain kappa particles, which are cytoplasmic structures. These kappa particles have their own DNA and are responsible for producing substances like paramecine, which is toxic to sensitive strains of Paramecium that do not possess these kappa particles. 4. **Genetic Basis**: The inheritance of the killer trait in Paramecium is determined by the presence of dominant alleles (K) for the killer phenotype. The sensitive strains are represented by the homozygous recessive genotype (kk). 5. **Conclusion**: Based on the information provided, the correct answer to the question is that inheritance would be extranuclear in the case of "killer Paramecium." **Final Answer**: Killer Paramecium. ---
**Step-by-Step Text Solution:** 1. **Understanding Extranuclear Inheritance**: Extranuclear inheritance refers to the transmission of genetic material that is not located in the nucleus. This type of inheritance typically involves organelles like mitochondria or chloroplasts, which have their own DNA. 2. **Identifying the Organism**: The question specifically asks for a case where inheritance would be extranuclear. One well-known example of extranuclear inheritance is found in certain strains of Paramecium, particularly the "killer" strains. 3. **Kappa Particles in Paramecium**: Killer strains of Paramecium contain kappa particles, which are cytoplasmic structures. These kappa particles have their own DNA and are responsible for producing substances like paramecine, which is toxic to sensitive strains of Paramecium that do not possess these kappa particles. ...
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