FACTOID # 17: Though Rhode Island is the smallest state in total area, it has the longest official name: The State of Rhode Island and Providence Plantations.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Asymptomatic carrier

An asymptomatic carrier (or just carrier), is a person who is infected with an infectious disease or carries the abnormal gene of a recessive genetic disorder, but displays no symptoms. Although unaffected by the disease or the disorder themselves, carriers can transmit it to others. In medicine, infectious disease or communicable disease is disease caused by a biological agent such as by a virus, bacterium or parasite. ... In genetics, the term recessive gene refers to an allele that causes a phenotype (visible or detectable characteristic) that is only seen in a homozygous genotype (an organism that has two copies of the same allele). ... A genetic disorder, or genetic disease is a disease caused by abnormal expression of one or more genes in a person causing a clinical phenotype. ...


Mary Mallon, known as "Typhoid Mary", was an asymptomatic carrier of typhoid fever. She worked as a cook for several families in New York City approximately a century ago. Several cases of typhoid fever in members of those families were traced to her by the Health Department. It appeared that she "carried" the infectious agent without becoming sick. There was no way of eradicating the disease and an attempt was made to restrict her from continuing to work as a cook to avoid spreading it to others. To meet Wikipedias quality standards, this article or section may require cleanup. ... Typhoid fever (or enteric fever) is an illness caused by the bacterium Salmonella Typhi. ...


The daughters of Queen Victoria, the princesses Alice and Beatrix, were asymptomatic carriers of the X-linked hemophilia gene (more precisely, an abnormal allele of a gene necessary to produce one of the blood clotting factors). Both had children who continued to pass the gene to succeeding generations of the royal houses of Spain and Russia, into which they married. Males who carried the gene had hemophilia, while females simply passed it to about half of their children. The genetic term for this type of "carrying" of a recessive trait is heterozygote. Victoria (Alexandrina Victoria; 24 May 1819 – 22 January 1901) was the Queen of the United Kingdom of Great Britain and Ireland from 20 June 1837, and the first Empress of India from 1 January 1877, until her death in 1901. ... Haemophilia or hemophilia is the name of any of several hereditary genetic illnesses that impair the bodys ability to control bleeding. ... Genetics (from the Greek genno γεννώ= give birth) is the science of genes, heredity, and the variation of organisms. ... In genetics, the term recessive gene refers to an allele that causes a phenotype (visible or detectable characteristic) that is only seen in a homozygous genotype (an organism that has two copies of the same allele). ... An organism is a heterozygote or heterozygous for a gene or trait if it has different alleles at the genes locus for each homologous chromosome. ...


  Results from FactBites:
 
Asymptomatic carrier - Wikipedia, the free encyclopedia (248 words)
An asymptomatic carrier (or carrier), is a person who is infected with an infectious disease or carries the abnormal gene of a recessive genetic disorder, but displays no symptoms.
Mary Mallon, known as "Typhoid Mary", was an asymptomatic carrier of typhoid fever.
The daughters of Queen Victoria, the princesses Alice and Beatrix, were asymptomatic carriers of the X-linked hemophilia gene (more precisely, an abnormal allele of a gene necessary to produce one of the blood clotting factors).
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m