Quote:
I don't think that when you cross those two it's a lock that you will get green eggs. I purchased 2 olive eggers that had the same mother and father, one laid a green egg add the other laid a dark pink egg. I think the mom was EE and the father was a maran.
If I remember biology correctly then there is always a possibility of taking all of one parents genes, in a single area.hence the brown egg layer.
but I wouldn't worry about it it's a really low chance of that happening
Only for sex-linked genes. Each parent contributes a copy of every gene. If the parent has two genes with the same allele (homozygous), you KNOW that that is the copy that will be contributed from that parent; if the alleles for that gene are dissimilar (heterozygous), the parent could contribute either. Theoretically, the ameraucana father should be homozygous for the blue eggshell gene, and thus contribute it to all his progeny. However, if bred with other ameraucanas, then it is possible that he is heterozygous for the gene, but the homozygous mother always contributed a copy of the blue eggshell gene, thus all female offspring lay blue eggs.
First, as others have said, you need to rule out whether a different bird is laying the brown egg. If it is proven to be the ameraucana X rock, then test breed some other birds (or check with those whom you have sold birds to) to see if any others lay brown eggs.
I don't think that when you cross those two it's a lock that you will get green eggs. I purchased 2 olive eggers that had the same mother and father, one laid a green egg add the other laid a dark pink egg. I think the mom was EE and the father was a maran.
If I remember biology correctly then there is always a possibility of taking all of one parents genes, in a single area.hence the brown egg layer.
but I wouldn't worry about it it's a really low chance of that happening
Only for sex-linked genes. Each parent contributes a copy of every gene. If the parent has two genes with the same allele (homozygous), you KNOW that that is the copy that will be contributed from that parent; if the alleles for that gene are dissimilar (heterozygous), the parent could contribute either. Theoretically, the ameraucana father should be homozygous for the blue eggshell gene, and thus contribute it to all his progeny. However, if bred with other ameraucanas, then it is possible that he is heterozygous for the gene, but the homozygous mother always contributed a copy of the blue eggshell gene, thus all female offspring lay blue eggs.
First, as others have said, you need to rule out whether a different bird is laying the brown egg. If it is proven to be the ameraucana X rock, then test breed some other birds (or check with those whom you have sold birds to) to see if any others lay brown eggs.