In this article we will discuss about the Inheritance of Shell Coiling in Snail. One of the classical examples of intricate relationship between maternal genotype and egg cytoplasm "phenotype" was studied in snails by Sturtevant. He showed that there are two strains of water snails (limnaea peregra) that differ each other in the direction of coiling of shell. Looking into [...]
In this article we will discuss about the Cytoplasmic Inheritance of Kappa Particles in Paramecium. One of the most striking and spectacular cases of cytoplasmic inheritance occurs in paramecium aurelia. In 1938, T.M. Sonneborn reported that some strains contain kappa particles in the cytoplasm and are known as "Killers ". Kappa particles are about 2 μ x in diameter and [...]
In this article we will discuss about the characteristics and examples of Cytoplasmic Inheritance. Characteristics of Cytoplasmic Inheritance: Information concerning cytoplasmic inheritance is meagre but whatever is known about the occurrence and action that is highly confusing. Some of the cytoplasm characteristics appear to be under the ultimate control of chromosomes but in other cases there is no evidence of [...]