Head Color Inheritance

Наследование цвета голов гульдовых амадин. Гульдовые амадины имеют три цвета голов : красный, желтый(оранжевый), черный. Наличие большого количества черного оперения в красной шапочке самок амадин гульда нормальное явление.

Для понимания схем паровок, приведенных в таблицах ниже, приведен перевод наиболе часто встречающихся сокращений:

Это поможет вам в дальнейшем лучше понимать о каких цветовых сочетаниях частей тела гульдовых амадин идет речь.

Male, Cock - Самец

Hen - Самка

RH (Red Head) - Красная голова

BH (Black Head) - Черная Голова

OH (Orange Head) - Оранжевая Голова

YH (Yellow Head) - Желтая Голова

PB (Purple Breast) - Фиолетовая Грудь

LB (Lilac Breast) - Сиреневая Грудь

WB (White Breast) - Белая Грудь

NB (Normal Вack) - номинативная (природного зеленого окраса) спинка

YB (Yellow Вack) - желтая спинка

BB (Blue Вack) - cиняя спинка

SB ( Silver Вack) - серебристая спинка

WB (White Вack) - белая спинка

Lady gouldians come in three head colors: red, yellow (orange), and black. (Please note that it is normal for hens to have a lot of black feathering in their masks, even if they are not black-headed.)

Red head (RH) is a sex-linked dominant trait, so cocks can be double factor (DF) or single factor (SF) red heads and express it while hens can only ever be single factor (SF) and express it. No cock or hen can ever be split for red head.

Black head (BH) is a sex-linked recessive trait, so cocks can be double factor (DF) (and express a black head) or single factor (SF) (and be "split" for black head) while hens can only ever be single factor (SF) and express it. No hen can ever be split for black head.

Yellow head (YH) is an autosomal recessive trait, but also requires at least one red head gene to be present in order to be expressed. If two yellow head genes are present on a bird that has no red head genes (and instead has black head genes), the bird will have a black head with a yellow tipped beak (YTB). This occurs because the bird is genetically a yellow headed bird, but it cannot express the yellow color because the yellow gene depends on the red head gene for expression, and the red head gene is not there. Both cocks and hens can be "split" for yellow head.

Here are some breeding charts which will give you a list of all potential outcomes from a given cock - hen pairing. Recall that Z and W denote the sex chromosomes of avian species (whereas X and Y denote the sex chromosomes of mammalian species), and that unlike mammals, the male finch is the homogametic sex (ZZ) and the female is the heterogametic sex (ZW).

DFRH cock × RH hen