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Discussion in 'Exhibition, Genetics, & Breeding to the SOP' started by JohnRoth, May 1, 2016.
Can someone show me what a Mille fleur booted bantam crossed with a silver sebright looks like?
Bumping this up
I have not made the cross but they should be poorly laced with false spangling. The tails will be mostly black. They will have feathered feet. If the male is a silver sebright the young will be silver. If the male is golden the offspring will be golden.
That is good to know. I didn't know the male determines the coloring!
The silver or gold color are sex-linked traits. The male determines if the offspring are silver if he is purebred silver (has two silver genes) because silver is dominant. He will give a silver gene to each offspring, therefore, all the offspring are silver. If the female is silver and the male is gold, then the male parent determines the color of the females which will be gold like the father, the female parent determines the color of the males they will be silver. Any gene that is sex-linked (on z chromosome) is always passed from the father to the daughters. If the father is gold the daughters are gold, if the father is purebred silver the daughters are silver ( he carries two silver genes) The mother does not give sex-linked traits to the daughters, the mother does not determine if the daughters are silver or gold. The mother and father each give one sex-linked gene to the sons, so the dominant gene given by a parent determines the color of the male; silver is dominant so the parent that is silver will determine the color of the male offspring.
Sometimes a rooster will carry a silver allele and a gold allele ( hybrid) in this case he can give a silver allele to some of his daughters and the daughters will be silver, he can also give a gold allele to some of his daughters and they will be gold. A hybrid (silver/gold) male can produce both gold and silver female offspring.
purebred silver roo x silver female = all silver F1 (offspring)
hybrid silver roo x silver female=only F1 silver males and some F1 silver females plus some F1 gold females ( no gold males) All the males are silver because the female is silver. Some of the male F1 will be purebred silver and some will be hybrid silver. Remember hybrids are silver/gold.
gold roo x silver female = F1 gold females ( every female is gold) and F1 silver males ( this is the classic sex linked cross)
gold roo x gold female = all F1 are gold