What is a secretor in forensic science?
Secretor is the name given to the condition that a person secretes their blood-type antigens into saliva and other bodily fluids. It is also the name of the gene that causes this to happen. In forensic work, a person’s blood type can be ascertained from very small traces of blood found at a crime scene. …
What is a Group A secretor?
Secretor status refers to the presence or absence of water-soluble ABO blood group antigens in a person’s bodily fluids, such as saliva, tears, breast milk, urine, and semen. People who secrete these antigens in their bodily fluids are referred to as secretors, while people who do not are termed non-secretors.
What is the difference between secretors and non-secretors?
Secretors are individuals that secrete blood group antigens in their body fluids while non-secretors are the individuals that do not secrete them in their body fluids and secretions.
What makes a person a secretor?
In simple terms, a person is said to be a secretor if he or she secretes their blood type antigens into their body fluids like the saliva, the mucus, whereas on the other hand, a Non-secretor does not put or if so at all very little of their blood type antigens into these fluids [5].
What is the meaning of secretors?
: an individual of blood group A, B, or AB who secretes the antigens characteristic of these blood groups in bodily fluids (such as saliva)
Do Babies always have the father’s blood type?
Just like eye or hair color, our blood type is inherited from our parents. Each biological parent donates one of two ABO genes to their child. The A and B genes are dominant and the O gene is recessive. For example, if an O gene is paired with an A gene, the blood type will be A.
What is blood type F?
f has historically been described as a “compound antigen” in the Rh blood group system. The f antigen is present when a person inherits an allele of the RHCE gene that codes for both the c and e antigens (specifically, the RHce allele of the RhCE gene), and absent if the person does not inherit that allele.
What are the clinical significance of those who are non secretors?
Non secretors are more prone to different varieties of auto-immune diseases and TTIs infections. Alcoholism has been associated with the Non-secretor blood type. Secretor status of an individual is also helpful to identify weaker variants of ABO group.
What does secretor stand for in forensic science?
World of Forensic Science. COPYRIGHT 2005 Thomson Gale. Secretor is the name given to the condition that a person secretes their blood-type antigens into saliva and other bodily fluids . It is also the name of the gene that causes this to happen.
How many people are secretors in the United States?
As a general rule, in the U.S. about 20% of the population are Non-secretors (with the remaining 80% being Secretors). With respect to the ABO blood types, it is very difficult to state that one type is more advantageous than another. Each blood type has its own strengths and characteristic weaknesses.
Who are the secretors of the Se gene?
Approximately 80% of Caucasian people possess the Se gene and are secretors; the other 20% are non-secretors.
How can you tell if a person is a secretor?
If the person is a secretor, the antibodies will bind to the antigens in their saliva rather than the red blood cells, and will not cause red blood cells to agglutinate.:25 Secretor status testing was historically used in forensic science, but this has been made obsolete by advances in DNA testing.:226