In this essay we will discuss about the examples that illustrates the cases of extra-nuclear inheritance in eukaryotes. Essay # 1. Maternal Inheritance: In certain cases, it has been observed that certain characteristic phenotypic traits of F1, F2 or F3 progeny are not the expression of their own genes, but rather those of the maternal parents. Such phenotypic expressions of [...]
Antibodies secreted by plasma cells may have several different effects - (1) They may interact with free (i.e., soluble) antigens causing precipitation; (2) They may interact with surface antigens of the pathogen (i.e., particulate antigens) causing agglutination; or (3) They may promote complement fixation. 1. Precipitation of Soluble Antigens: Antigens may have one or more antigenic determinants. If antigens contain [...]
Are you looking for an essay on ‘Lymphocytes and the Immune Response’ ? Find paragraphs, long and short essays on ‘Lymphocytes and the Immune Response’ especially written for school and college students. 1. Precipitation of Soluble Antigens: Antigens may have one or more antigenic determinants. If antigens contain one determinant, they are called monodeterminants; if they contain two determinants, they [...]