Webstudy with quizlet and memorize flashcards containing terms like heredity, recessive, gregor mendel and more. Phenotype is the constellation of observable traits; Genotype is the genetic endowment of the individual. Phenotype = genotype + development (in a given. Webgenotype and phenotype quiz for 9th grade students. Find other quizzes for biology and more on quizizz for free! Webinheritance of a characteristic controlled by a single gene. The genetic constitution of an organism. It describes all the alleles that an organism has and also determines the. Weba part of a code that controls the development of traits. Study with quizlet and memorize flashcards containing terms like genotype, phenotype, heterozygous and more. Webin a broad sense, the term genotype refers to the genetic makeup of an organism; In other words, it describes an organism's complete set of genes. In a more narrow sense, the.