Dictionary » D » Domain

Domain

Definition

noun, plural: domains

(1) (taxonomy) The highest taxonomic rank of organisms in which there are three groupings: Archaea, Bacteria and Eukarya.

(2) (zoogeography) A major faunal area of the earth's surface.

(3) (anatomy) A place in or a division of the body or a part of the body, as abdominal region.

(4) (molecular biology) A part of a molecule or structure with common physico-chemical features or properties, as in polar domain, atp-binding domain, helical domain, etc.

(5) (general) A realm of knowledge, thought, responsibility, etc., as the domain of science.


Supplement

In biological taxonomy, a domain is the highest order of life classification, even higher than a Kingdom. Carl Woese introduced a three-domain system of classification in 1990 where organisms are divided into three domains: Archaea, Bacteria and Eukarya. Both the Domain Bacteria and Domain Archaea include prokaryotic organisms whereas the Domain Eukarya includes all eukaryotic organisms.


Word origin: French domaine, blend of Old French demaine (from Late Latin dominicum) and Latin dominium, property, both from dominus, lord

Synonym:

  • superkingdom

Related terms:


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Please help us I.D. this micro-organism

... aperture on the objective you're using? Third, you say you found an organism living in a human. Have you taken any steps to identify it's domain? Any staining at all? (ie, gram +/- or nuclear staining, etc..) It's near impossible to identify an organism with the information you provided.

See entire post
by jyaron
Sun Aug 09, 2009 5:10 pm
 
Forum: Microbiology
Topic: Please help us I.D. this micro-organism
Replies: 4
Views: 168

Re: malaria- sickle cell

Which type of anti-Malaria tablets work best with the least number of side affects yada yada? I am going to Indonesia this year on a trip with university and will be needing anti-Malaria tablets and was wondering which ones were best? I have talked to some people that say the most expensive are my b...

See entire post
by merisalam
Fri Jul 24, 2009 5:40 am
 
Forum: Microbiology
Topic: malaria- sickle cell
Replies: 2
Views: 247

Re: The Colin Leslie Dean species paradox

... Bacteria by nature change genetically very quickly. They are very different from Eukaryotes (us) genetically--that's why they are in a seperate domain from protists, fungi, plants and animals. They ingest plasmids and are infected by viruses. Thus they have insertions, deletions and replacement ...

See entire post
by AFJ
Sat Jul 18, 2009 6:07 pm
 
Forum: Evolution
Topic: The Colin Leslie Dean species paradox
Replies: 120
Views: 2138

Re: blood pressure

How does blood pressure apply to science? For my final science project, I am taking the blood pressure of 6 students, three males, and three females. I hope to conclude whether the students blood pressure is higher in the morning before school, or after school in the afternoon. My only issue is, tha...

See entire post
by brisaya
Sat Jul 04, 2009 7:59 am
 
Forum: Physiology
Topic: blood pressure
Replies: 13
Views: 1375

Re: Why do you keep talking about species

... simply use absence of evidence as the main base for the evidence of creation... That said many scientist that are very competent in their specific domain have really outlandish ideas for some other things. They are just human beings after all. We all wish we were rational, and then you turn on ...

See entire post
by canalon
Tue Jun 30, 2009 4:28 pm
 
Forum: Evolution
Topic: Why do you keep talking about species
Replies: 20
Views: 574
View all matching forum results

This page was last modified 11:24, 13 May 2009. This page has been accessed 9,655 times. 
What links here | Related changes | Permanent link