PATHOLOGY

Detailed explanation-1: -A true-breeding organism, sometimes also called a purebred (biology slang: pure line or true-breeding line), is an organism that always passes down certain phenotypic traits (i.e. physically expressed traits) to its offspring of many generations.

Detailed explanation-2: -True-breeding plants are genetically identical for the character(s) being investigated. Pure breeds do not show variations and transmit the same traits for several generations upon self-pollination.

Detailed explanation-3: -∙ A plant whose genotype is in homozygous condition and can express the certain type of phenotype is called as true breeding. ∙ It produces offspring with the same traits upon self-fertilization or produces offspring of its own kind. ∙ An example of a true breeding tall plant is a plant with the genotype TT.