Definition of "genotype" []

• The genetic makeup, as distinguished from the physical appearance, of an organism or a group of organisms. (noun)
• The combination of alleles located on homologous chromosomes that determines a specific characteristic or trait. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Your child's genotype is important because certain genotypes respond better to treatment than others."
• "That fixed sequence is known as your genotype, and it sets the parameters for your good health, as well as your relative risk for developing disease."
• "Rapid divergence of phenotype but not of genotype is theoretically possible, but given the genetic closeness of the sampled individuals (and this assumes that the extant Giant tortoises identified as D. arnoldi and D. hololissa really are remnants of the same populations as those given these names but based on old material), should they be recognised as species separate from D. dussumieri?"