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Law of Recessiveness



A Mendelian law which holds that a recessive trait is expressed only when the paired allele the offspring acquired from its parents is identical.


In cases of complete dominance, the dominant allele would be expressed in the phenotype of an individual while the recessive allele would be masked. The recessive trait would only be expressed in the absence of dominant allele or the inheritance of the recessive alleles (for that trait). For instance, the offspring of a homozygous recessive genotype for a particular trait would manifest the recessive trait.

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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 on the ...

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by jonmoulton
Fri Aug 09, 2013 7:45 pm
Forum: Genetics
Topic: What causes dominance between alleles?
Replies: 2
Views: 4750

genetic phenotype

hello, so i have some questions that i need someone to explain it to me what happens to the concepts dominance and recessiveness when we are able to read the DNa sequences in both loci in an individual who is heterozygous for a particular gene? and if we want to describe this genetic ...

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by ladwer
Mon Nov 05, 2012 6:52 pm
Forum: Genetics
Topic: genetic phenotype
Replies: 1
Views: 2973

Re: Campbell and Reece 8th edition

... gives different polypeptides and so how does the definition of a gene works???????????????????????????? a bit confused and about dominance and recessiveness of allele were you telling me before that a recessive allele will give a non-functional protein and the dominant allele will give a functional ...

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by Stephen1993
Fri Apr 29, 2011 1:05 pm
Forum: Cell Biology
Topic: Campbell and Reece 8th edition
Replies: 36
Views: 30360

Re: dominant recessive relationship...

I do not agree that it is something that can be simply looked up because dominance and recessiveness is limited to phenotype and not all alleles show a dominant/recessive relationship. Essentially the dominant allele is the one that codes for a protein that will be ...

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by ntropi
Tue Jul 06, 2010 1:12 am
Forum: Genetics
Topic: dominant recessive relationship...
Replies: 2
Views: 3174

to dominant or not to dominant that is the question

recessiveness and dominance is more a measure of gene expression than whether or not it is mutant.

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by mith
Tue Dec 11, 2007 9:51 pm
Forum: Genetics
Topic: to dominant or not to dominant that is the question
Replies: 17
Views: 8378
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