Background
Several theories about the genetics of coat colour have been described in the past decades. Recent knowledge about genetic factors has led to new developments, via which more than 10 coat colour factors have been described in several species. Coat colour is influenced by many hereditary factors. One of the basic factors distinguishes between Black and Red. In contrast with the main rule that black is dominant over red, several other coat colour factors exist which e.g. dilute the pigment in hairs. This results in a wide variety of colour variants, which are complicated to identify without DNA-tests. Across the different animal species, dozens of genetic factors influencing coat colour have been identified.
Test specific information
In contrast with the usual
Inheritance
of Black and Red, a specific phenomenon in cattle is know in which cattle change from Red to Black around 12 months of age. This effect is knows as the Telstar-factor.
Age
Most coat colours and coat types are usually visible directly after birth.
Throughput
Normally the result can be expected within 25 working days. This turn-around-time starts when both the sample and the fully filled-out and signed submission form have been received.
Location of disease or trait
Genetic factors influencing coat colours and coat types are usually visible on the outside of an individual. Several factors may be hidden by the external variation.
Breed dependence
For this test samples from all breeds are accepted.
Sample type
For this DNA test we accept the following materials: Hair, Semen, Blood EDTA, Blood Heparin, Tissue. Please contact PharmaDNA if you wish to submit other material as listed.
Result
Coat colours are based on many genetic factors. For each factor, a separate test result will be returned.
Inheritance
Various genetic factors influencing coat colour are inherited in a dominant or recessive mode. Coat colours are influenced by a large number of genetic factors.
Severity of Disease
Genetic characteristics are not a disease.
