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Dominance

Definition

noun

(general) The state of being dominant; supremacy; for example in plants, apical dominance refers to the condition in which vertical growth supersedes lateral growth.

(genetics) The property of a gene (or allele) when it suppresses the expression, or dominates the effects, of the recessive gene (or allele).

(ecology) (A group of) organisms that have acquired a high status in a social group, such as an animal or a group of animals on top of a social hierarchy usually as a result of aggression.

(neurology) The normal tendency for one side of the body or of one of a pair of organs to dominate or be used in consistent preference than the other, e.g. lateral dominance refers to the consistent use of one side of the body, as in being left-handed or right-handed, and left-brained or right-brained (depending on which side of his brain is dominant or frequently used).


Supplement

Word origin: Latin dominari, to govern.

Related forms: dominant (adjective or noun), dominate (verb).
Related terms: apical dominance, codominance, complete dominance, incomplete dominance.


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Re: Multicellular prokaryote

... units, either maintain more distinct separateness than fits our 'notion (ex colonies), ' or lose their distinction too much (no one organism has dominance which emerges as a separate reproducible entity). The lack of nucleus/membranous abilities/meiosis, makes it difficult to keep that ''separateness" ...

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by thirdprometheus
Fri Nov 15, 2013 7:45 pm
 
Forum: Microbiology
Topic: Multicellular prokaryote
Replies: 26
Views: 25171

Re:

Hi guys thanks for ur replies! I think one of the reasons for dominance in traits is that d dominant gene tends to inhibit the expression of the recessive gene either directly or through a corporative protein. What do you mean by "inhibit the expression ...

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by wildfunguy
Thu Aug 22, 2013 6:33 pm
 
Forum: Cell Biology
Topic: Do chromosomses ever get competitive?
Replies: 9
Views: 6597

Do chromosomses ever get competitive?

Hi guys thanks for ur replies! I think one of the reasons for dominance in traits is that d dominant gene tends to inhibit the expression of the recessive gene either directly or through a corporative protein.

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by Fearnot
Fri Aug 16, 2013 5:31 pm
 
Forum: Cell Biology
Topic: Do chromosomses ever get competitive?
Replies: 9
Views: 6597

Re: What causes dominance between alleles?

This is not the only way that dominance and recessiveness can happen. But this is a good way to illustrate once possibility (and a fairly common one). When you have two healthy alleles for a particular gene, one copy on a maternal and one ...

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by jonmoulton
Fri Aug 09, 2013 7:45 pm
 
Forum: Genetics
Topic: What causes dominance between alleles?
Replies: 2
Views: 2870

What causes dominance between alleles?

In alleles, what makes one dominant and the other recessive? Why is the transcription of the chromosome that carries the dominant gene preferrable to the one that carries the recessive gene?

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by Fearnot
Fri Aug 09, 2013 4:22 pm
 
Forum: Genetics
Topic: What causes dominance between alleles?
Replies: 2
Views: 2870
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