| bicoid | <molecular biology> An egg polarity gene in Drosophila, concentrated at the anterior pole of the egg and required for subsequent anterior structures. A maternal effect gene. (18 Nov 1997) |
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| bicoid gene | A group of genes which are important to the proper development of the head and thorax in the embryo of the fruit fly Drosophila melanogaster. (09 Oct 1997) |