The genetic make-up of an organism is described as? By: Sunday|Published on: Sep 6|Categories: Biology JAMB| 0 comments A. Allele B. Chromosome C. Phenotype D. Genotype Correct Answer: Option D – Genotype Users Also Read These:The study of an individual organism or a single…The genetic composition of an organism is termed?The crossing of individuals of the same species with…The diagram above shows the dentition of an…Genetic counselling is important when a marriage is…SEE ALSO Which of the following factors may not affect living organisms in an aquatic habitat?