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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


Recessive and dominant genetics - Pitx1 case study

Hey, so in my readings on recessive and dominant genetics, I have come across a question that is pretty basic but still stumping me (maybe from burning my eyes with endless hours of reading) Question: How would a mouse embryo differ from ...

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by scienceguy914
Mon Sep 08, 2014 1:44 am
 
Forum: Genetics
Topic: Recessive and dominant genetics - Pitx1 case study
Replies: 0
Views: 424

What makes dominant allele dominant?

Recessive alleles usually have a loss of function, means they are not producing a functional protein.

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by josem
Wed Sep 03, 2014 9:13 pm
 
Forum: Genetics
Topic: What makes dominant allele dominant?
Replies: 7
Views: 4375

What makes dominant allele dominant?

Recessive alleles usually have a loss of function means they are not producing a functional protein.

See entire post
by josem
Wed Sep 03, 2014 9:12 pm
 
Forum: Genetics
Topic: What makes dominant allele dominant?
Replies: 7
Views: 4375

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
 
Forum: Genetics
Topic: Question about hair color and tallness inheritance
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Views: 613

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
 
Forum: Genetics
Topic: Genetics Pedigree Help Required
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Views: 1672
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