Many characteristics can be broadly classified as qualitatively inherited or quantitatively inherited. The table below summarizes the main differences between these two classifications.
|Qualitatively inherited||Quantitatively inherited|
|Controlled largely by one gene locus (or maybe two loci)||Controlled by many gene loci|
|Phenotypes can be described by a small number of distinct categories or classes||Phenotypes show continuous distribution|
|Routine environmental influences (such as nutrition, climatic conditions, etc.) do not alter phenotypes||Routine environmental influences (such as nutrition, climatic conditions, etc.) alter phenotypes to varying degrees|
For the characters below, choose if qualitative inheritance or quantitative inheritance is a more likely descriptor.
Mature skeletal size is
Polydactyly (possessing extra fingers/toes or not) is
Litter size in mice and pigs is
Likelihood to develop heart disease is
Black vs. chocolate coat color in labrador retriever dogs is