Dictionary » R » Recessive

Recessive

Definition

adjective

(general) Going back; receding.

(genetics) Of, or pertaining to, a gene (or allele) whose phenotypic expression is masked by a dominant gene (or allele).

noun

(1) A recessive allele or trait.

(2) An organism whose recessive trait is discernible or expressed.


Supplement

In genetics, a recessive gene or allele is one in which the effect is not tangible, or is masked by the effects of the dominant gene. The recessive trait may be expressed when the recessive genes are in homozygous condition or when the dominant gene is not present. That happens when an organism inherits a pair of recessive genes from its parents.


Word origin: Latin recess(us), a withdrawal, receding part + -ive.

Related forms: recessiveness (noun), recessively (adverb).
Related terms:

Compare: dominant.


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Results from our forum


Question about hair color and tallness inheritance

... Now the funny thing is my friend is not 185cm tall, but he is 2 meters (6.6feet) its huge! How is it inherited? Is it the same as hair color, like recessive stuff?

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by hitom
Thu Aug 07, 2014 9:58 pm
 
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Topic: Question about hair color and tallness inheritance
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Genetics Pedigree Help Required

Based on the information in the pedigree of Family B, is inheritance of this hearing loss trait consistent with an autosomal dominant or autosomal recessive pattern? (Tip: assume autosomal dominant and assign genotypes of affected and unaffected individuals, then assume autosomal recessive and ...

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by TheBell
Fri Mar 21, 2014 8:49 pm
 
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what is a dominant trait and the recessive trait?

How do you tell what is the dominant trait and the recessive trait in plants?

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by natureandbiology
Wed Mar 12, 2014 5:34 pm
 
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Rabbit colors

A hint: Black rabbit is double dominant brown (BB). White rabbit is double recessive brown (bb).

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by kau
Tue Mar 11, 2014 9:16 am
 
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What makes dominant allele dominant?

You can have tens of alleles (often you do in a population). How do you imagine effect of two recessive alleles?

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Mon Mar 10, 2014 3:45 pm
 
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