Extreme dilute
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| Extreme dilute blue check. | |
|---|---|
| Locus | d locus |
| Genetic symbol | d^ex |
| Common name | Extreme dilute or ecru |
| Inheritance | Sex-linked recessive |
| Mutation type | Colour modifier |
| Commonly found in breeds such as: | Racing homer |
Extreme dilute or ecru refers to at least one (and possibly more than one) allele at or the d locus. This mutation is sex linked and recessive to wild type.
Contents
Description
Inheritance
Extreme dilute is a sex-linked recessive mutation. This means that both parents need to carry the mutant gene for it to express in a cock the next generation, but only the father needs to carry it for the gene to express in a hen. As a sex-linked recessive mutation, it is possible for this mutation to be carried by cock bird who does not visually express it, but any hen who carries the gene will show it.
Alleles
Apart from wild type, the other alleles at the d locus are pale and dilute.
