Dictionary » R » Recessive




(general) Going back; receding.

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


(1) A recessive allele or trait.

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


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.

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

Results from our forum

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 ...

See entire post
by TheBell
Fri Mar 21, 2014 8:49 pm
Forum: Genetics
Topic: Genetics Pedigree Help Required
Replies: 0
Views: 119

what is a dominant trait and the recessive trait?

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

See entire post
by natureandbiology
Wed Mar 12, 2014 5:34 pm
Forum: Botany Discussion
Topic: what is a dominant trait and the recessive trait?
Replies: 2
Views: 239

Rabbit colors

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

See entire post
by kau
Tue Mar 11, 2014 9:16 am
Forum: Genetics
Topic: Rabbit colors
Replies: 1
Views: 104

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?

See entire post
by JackBean
Mon Mar 10, 2014 3:45 pm
Forum: Genetics
Topic: What makes dominant allele dominant?
Replies: 5
Views: 1158

What makes dominant allele dominant?

... alleles for a gene. The most popular example, that comes into my mind, is blood types (AB0-system). But it is not possible that more than one is recessive to all the others - what would happen if two different recessive genes are inherited? The same is true for dominant alleles. Therefore there ...

See entire post
by Tricho
Sun Mar 09, 2014 7:19 pm
Forum: Genetics
Topic: What makes dominant allele dominant?
Replies: 5
Views: 1158
View all matching forum results

This page was last modified 08:06, 29 October 2008. This page has been accessed 144,421 times. 
What links here | Related changes | Permanent link