Page 1 of 2 1 2 >
Topic Options
#117131 - 04/06/18 02:52 AM Can Dun and Dominant white be
Smooth Mule Offline
Coop Keeper

Registered: 02/13/10
Posts: 659
Loc: Missouri
Can dun and dominant white exist on the same bird?

Top
#117147 - 04/14/18 12:53 PM Re: Can Dun and Dominant white be [Re: Smooth Mule]
Wieslaw Offline
Moderator
Classroom Professor

Registered: 09/18/09
Posts: 3840
Loc: Denmark
Yes, they are alleles, so heterozygous I/Id. But I do not know whether they can be expressed at the same time. (Perhaps in case of mosaicism - loss/deactivation of the dominant gene on a part of the body)

Top
#117152 - 04/18/18 10:40 AM Re: Can Dun and Dominant white be [Re: Wieslaw]
Smooth Mule Offline
Coop Keeper

Registered: 02/13/10
Posts: 659
Loc: Missouri
I bought some chicks and was informed that the yellow ones would be dominant white plus dun. I didn't think that was possible. And thanks for responding

Top
#117153 - 04/18/18 10:42 AM Re: Can Dun and Dominant white be [Re: Smooth Mule]
Smooth Mule Offline
Coop Keeper

Registered: 02/13/10
Posts: 659
Loc: Missouri
Do I understand this right? They can be het for both dun and dominant white, but that should mean they cannot be homozygous for either?

Top
#117155 - 04/18/18 02:14 PM Re: Can Dun and Dominant white be [Re: Smooth Mule]
Wieslaw Offline
Moderator
Classroom Professor

Registered: 09/18/09
Posts: 3840
Loc: Denmark
They are alleles(occupy the same locus), so they can't be both homozygous at the same time. Possible combinations are I/I, Id/Id or I/Id. There can't be any other combination out of the two.

Top
#117156 - 04/22/18 12:06 AM Re: Can Dun and Dominant white be [Re: Wieslaw]
Henk69 Offline
Moderator
Classroom Professor

Registered: 02/13/06
Posts: 3228
Loc: Netherlands
I/Id would be white, when there is leakage: with chocolate spots

Top
#117157 - 04/23/18 01:36 AM Re: Can Dun and Dominant white be [Re: Henk69]
Hen-Gen Offline
Ruler of the Roost

Registered: 10/01/05
Posts: 1163
Loc: Island of Fetlar, Shetland
Indeed. Dominant white is notoriously leaky which is why dominant white breeds like the White Leghorn often are also silver, splash and barred to help mitigate against this leakiness.
I never use the word chocolate in relation to dun in order to avoid confusion with the two known mutations of chocolate found in the chicken.

I'll crawl back into my box now smile


Edited by Hen-Gen (04/23/18 01:37 AM)
_________________________
If you have nothing............
......... give it away!

Top
#117158 - 04/25/18 11:51 PM Re: Can Dun and Dominant white be [Re: Hen-Gen]
Henk69 Offline
Moderator
Classroom Professor

Registered: 02/13/06
Posts: 3228
Loc: Netherlands
Chocolate is a phenotypic descriptor. Dun and choc birds look the same. The way they look should have one name... wink

Top
#117159 - 04/27/18 12:30 AM Re: Can Dun and Dominant white be [Re: Henk69]
Hen-Gen Offline
Ruler of the Roost

Registered: 10/01/05
Posts: 1163
Loc: Island of Fetlar, Shetland
.................... er, right. Taxi! wink


Edited by Hen-Gen (04/27/18 12:31 AM)
_________________________
If you have nothing............
......... give it away!

Top
#117160 - 04/29/18 01:57 PM Re: Can Dun and Dominant white be [Re: Henk69]
Sonoran Silkies Offline
Flock Leader

Registered: 10/09/08
Posts: 347
Loc: Arizona
Originally Posted By: Henk69
Chocolate is a phenotypic descriptor. Dun and choc birds look the same. The way they look should have one name... wink
I agree, although I usually say "chocolate coloured" at least once when there could be confusion between dun and choc.

Top
Page 1 of 2 1 2 >


Moderator:  Admin @ The Coop, Henk69 
Who's Online
0 registered (), 70 Guests and 0 Spiders online.
Key: Admin, Global Mod, Mod
Shout Box