Z.P.  Wang, X.T.  Wang, R.F  Liu, J.Y.  Li, X.M.  Deng, 
    Refined Localization of the <I>O</I> Gene for Blue Egg Phenotype on Chicken Chromosome 1,
    Journal of Animal and Veterinary Advances,
    Volume 9,Issue 23,
    2010,
    Pages 2947-2950,
    ISSN 1680-5593,
    javaa.2010.2947.2950,
    (https://makhillpublications.co/view-article.php?doi=javaa.2010.2947.2950)
    Abstract: The blue egg is caused by a dominant mutation (O) and preliminary assigned to the interval of 1.8 Mb from 67.29, 6.991-69.1, 40.571 bp on chromosome 1. In order to refine the localization of the <I>O</I> gene, linkage analysis was performed between 6 markers in the mapping interval and the O locus using 149 F<SUB>2</SUB> offspring from an intercross between DongXiang blue-shelled and DongXiang brown-shelled chickens.
    Keywords: Chicken;blue egg;mapping;linkage;association;China