Question
Biology Question on the molecular basis of inheritance
Extranuclear inheritance occurs in
A
killer Paramaecium
B
killer Amoeba
C
Euglena
D
Hydra.
Answer
killer Paramaecium
Explanation
Solution
Cytoplasmic inheritance is the passage of traits from parents to offspring through structures present in the cytoplasm of the contributing gametes. These structures may be kappa in Paramecium. These particles are not only inherited but are also infective, since they can be introduced into new hosts without the need of actual process of reproduction. Further the presence and reproduction of these infective particles may also depend on nuclear genes.