Peak crest
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 | |
| Young pigeon with a peak crest (cr//cr). | |
|---|---|
| Locus | cr locus |
| Genetic symbol | cr |
| Common name | Peak Crest |
| Inheritance | Autosomal recessive |
| Mutation type | Morphological |
| Description | Upturned feathers at rear of head. |
| History | Ancient |
| Commonly found in breeds such as: | Many |
Peak Crest (symbol cr) is a recessive morphological mutation located at the cr locus.
Description
The crest consists of a patch of reversed feathers at the back of the pigeon's head. Instead of growing down towards the bird's rear, the crest feathers point upwards in the opposite direction.
Inheritance
Peak crest is an autosomal recessive mutation. This means that both parents need to carry the mutant gene for it to express in the next generation. As a recessive mutation, it is possible for this mutation to be carried by a bird who does not visually express it.
Shell and other crests
It appears that shell crest and some other crests are created by a genotype including peak crest with additional modifiers.
History
See also
Shell crest - a phenotype that includes peak crest in it's genotype.
Crests - a list of pigeon crest phenotypes
