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bicoid (bcd)

Overview page. Subjects: Genetics and Genomics.

A gene that is essential for normal axis formation in Drosophila. The transcription of bcd takes place in the nurse cells (q.v.), and these are of maternal genotype. This mRNA is...

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gap gene

Overview page. Subjects: Chemistry — Genetics and Genomics.

A class of Drosophila genes that control embryogenesis. Loss of function mutations result in the loss of contiguous body segments, and therefore gaps appear in the normal pattern of...

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ikaros

Overview page. Subjects: Chemistry.

A protein that binds and activates the enhancer of a gene CD3‐δ involved in T‐lymphocyte specification and maturation. Similar to hunchback, it is a zinc‐finger protein.

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polarity mutant

Overview page. Subjects: Genetics and Genomics.

1. a mutant gene that is able to reduce the rate of synthesis of the proteins that normally would be produced by wild-type alleles of the genes lying beyond it on the...

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selector gene

Overview page. Subjects: Genetics and Genomics.

Any of a class of genes encoding transcription factors that specify cell type and tissue, organ, and regional identity in animals such as Drosophila, in which they were first described.

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zygotic gene

Overview page. Subjects: Genetics and Genomics.

A gene expressed in the early embryo. Embryos with mutations in zygotic genes are phenotypically abnormal, and this phenotype is dependent on genetic contributions from both parents, i.e.,...

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zygotic segmentation mutants

Overview page. Subjects: Genetics and Genomics.

Mutations in Drosophila melanogaster that are zygotically expressed and control the spatial pattern of development of the embryo. The mutations fall into three classes that are defined by...

See overview in Oxford Index