It is linked to the pea comb but you can get straight combed blue egg layers. Do not quote my numbers, this is for an example only. Say you have 100 chicks, from a SC LG and an Am cross. You should end up 100% pea combed chicks, and all should lay blue eggs. If you then cross these chicks you will 75% will have pea combs, of those 25% will be homozygous for pea comb. The other 50% will be like their parents.
Anyway, about blue eggs and straight combs. Those about homozygous chicks for pea combs and straight combs should equally be a mixture of blue/white egg layers. The problem come in with the linkage. Since these two genes "like" each other you will get about 40% blue egg layers and 10% white from the pea comb, for the straight the opposite is true 10% blue and 40% white.
Clear as mud?
Anyway, about blue eggs and straight combs. Those about homozygous chicks for pea combs and straight combs should equally be a mixture of blue/white egg layers. The problem come in with the linkage. Since these two genes "like" each other you will get about 40% blue egg layers and 10% white from the pea comb, for the straight the opposite is true 10% blue and 40% white.
Clear as mud?
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