6 famiglie genetiche de colori

Vorrei riportare quello che ho letto sulle famiglie genetiche.
Tutti i colori dei polli si collocano all'interno di queste 6 famiglie genetiche.

1° FAMIGLIA è quella basata sul nero integrale (E)..vi appartengono il nero integrale, il blu, lo splash, lo sparviero ecc

2° FAMIGLIA è quella basata sul nero ramato (ER)

3° FAMIGLIA è quella basata sul frumento dominante (eWh)

4° FAMIGLIA è quella basata sul collo oro (e+)

5° FAMIGLIA è quella basata sul perniciato (eb) a cui appartengono oltre ai perniciati, la colorazione millefiori, porcellana ecc

6° FAMIGLIA è quella basata sul frumento recessivo (ey)

Appartenere ad ua famiglia significa che la prima coppia della formula genetica è la stessa della famiglia a cui appartengono..ad esempio se la perniciata appartiene alla 5° famiglia avrà eb /eb - s+ /s+ o s+/

Alcuni colori possono benchè siano uguali appartenere a famiglie genetiche diverse..un esempio, il fulvo..il fulvo può appartenere o alla 6° famiglia quella basata sul frumento recessivo o alla 3° quella basata sul frumento dominante..fenotipicamente sono uguali, molto difficile distinguere la leggera tonalità differente ma geneticamente sono diversi.Un'altro esempio è il bianco che da quello che leggo è presente in ogni famiglia genetica..quindi esisterebbero 6 tipi di bianco (dominante o recessivo) diversi.
Non tutte le razze dispongono di tutte le colorazioni elencate nelle famiglie genetiche.

yes exact Rachele, look also this:
zijdehoenders.googlepages.com/basicsimple
Basic colour distribution genes (as you puted it)
+
Colour genes who influence the paterne

I puted these 6 simple genetic lessons to start with.

zijdehoenders.googlepages.com/geneticdetail
zijdehoenders.googlepages.com/geneticdetails2
zijdehoenders.googlepages.com/geneticdetails3
zijdehoenders.googlepages.com/geneticdetails4
zijdehoenders.googlepages.com/geneticdetails5
zijdehoenders.googlepages.com/geneticdetails6

This stands open for discussion and help.

As Rachele started

FIRST GROUP: COLOUR GENES WHO INDICATE THE TOTAL COLOUR

Primary Pattern E locus alleles are: E (Extended Black) ER (Birchen) eWh (Wheaten) e+ (Wild type) eb (Brown).

The E locus alleles produce the base primary colour/patterns to which varieties are build upon.

The e+ allele is the wild -type, and produces the typical Black Breasted Red male- salmon breasted female phenotypes.

The eb allele is the brown -type or the aziatic -type as in the Silkies partridges NO salmon breasted female phenotypes.

-E (Extended Black) –black/cream day-old chicks, adults predominantly black, but may have some pheomelanin (silver or gold) areas in hackles.

-ER (Birchen)- black/cream day-old chicks, adults predominantly black, but may have more pheomelanin (silver or gold) areas in hackles, wing bows, etc.

-eWh (Dominant Wheaten)- cream day-old chicks, adult male Black Breasted Red, adult hen wheaten.

-e+ (Wild type) – dorsal stripes & eye stripe- day old chicks, adult male Black Breasted Red, adult hen salmon-breasted.

-eb (Brown/Aziatic) – brownish day-old chicks, adult male Black Breasted Red, adult hens brown breasted – stippling.

to go on with the

SECOND GROUP: COLOUR GENES WHO CHANGE THE UNIFORMITY OF THE TOTAL COLOUR

-I (Dominant White) Autosomal incomplete dominant. Fades pheomelanin when homozygous, but not with one dose.

-ID (Dun) Autosomal incomplete dominant. One dose darker than two doses. Allelic to I.

-IS (Smoky) Autosomal both dominant & recessive. Changes eumelanin- black to smoky shade. Allelic to I.

-choc (chocolate) Sex-Linked, recessive. Changes black-eumelanin to a chocolate-brown shade. Allelic to I.

-c (recessive white) Autosomal recessive. Obstruct both pheomelanin & eumelanin to white.

-S (Silver) sex-linked gene changes most of the pheomelanin (gold-red) of the wild phenotype to silver-white, except for the salmon breast of the e+/e+ hens. This gene is incompletely dominant in the males.

-Bl (Blue) Autosomal incomplete dominant. Heterozygous= Blue, Homozygous= Splash

-lav (lavender) Autosomal recessive. Diluter of eumelanin and also dilutes pheomelanin.

-mz (recessive black).

-rb (mat (not shining) black).

-Cb (Champagne Blonde) dominant, might have a close linkage with Columbian.

-ig (Inhibitor of Gold - Cream) recessive, no effect on eumelanin, generally males show a greater dilution of pheomelanin than females.

-Cha (charcoal) Both Melanotic & Charcoal genes were identified as different, by using linkage relationships. They are both on the same chromosome, but different distances to other known loci (eg P) on the same chromosome.

and than

THIRD GROUP: COLOUR PARTIONING GENES

-Co (Columbian) dominant on both sexes if homezygous (Co/Co) and pushes the black to the extreme endings (as wings, tail, neck and footfeathers) by extending and clearing the red to orange.

-Db (Dark brown) The Db gene is unusual in that when homozygous, it is a very good columbian restrictor in males, yet only a partial columbian restrictor in females.

-Di (Dilute) incompletely dominant dilution of pheomelanin in adult plumage (gold-red).

-Mh (Mahogany) incompletely dominant a partial eumelanin restriction, especially in back, breast & wing plumage (male homozygote resembling the spangling pattern on breast).

-Ml (Melanotic) is sex influenced, autosomal incompletely dominant gene.

to end with

FOURTH GROUP : PATRON GENES

-Pg (laced) recessive.

-B (barred) sex-linked recessive.

-mo (mottled) white feathertips, dominant.