maternal-effect gene

Gene, usually required for early embryonic development, whose product is secreted into the egg by the mother. The phenotype is thus determined by the mother\'s, rather than the egg\'s, genotype, cf. zygotic-effect gene. See also egg-polarity gene.

Dictionary of molecular biology. 2004.

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  • Maternal effect dominant embryonic arrest — (Medea) is a selfish gene composed of a toxin and an antidote. A mother carrying Medea will express the toxin in her germline, killing her progeny. If the children also carry Medea, they produce copies of the antidote, saving their lives.… …   Wikipedia

  • Maternal effect — This article concerns the legitimate scientific concept of genes that are expressed only when carried by the female parent. It is not to be confused with the generally discredited theory of maternal impression. A maternal effect is a situation… …   Wikipedia

  • zygotic-effect gene — A gene whose phenotype is dependent on the genotype of the zygote, rather than the genotype of the mother. See maternal effect gene …   Dictionary of molecular biology

  • Gène — Pour les articles homonymes, voir Gène (homonymie). Représentation simplifiée d un gène d eucaryote (les exons sont des séquences codantes, alors que les introns sont des séquences non codantes) …   Wikipédia en Français

  • Gene-environment correlation — Genetic factors influence exposure to many features of the environment. This comes about because people actively shape their experiences according to their personality and behavior, which are heritable. A consequence is that the relationship… …   Wikipedia

  • egg-polarity gene — A gene whose product distribution in the egg determines the anterior posterior axis of subsequent development. Best characterized in Drosophila : see bicoid, maternal effect gene …   Dictionary of molecular biology

  • H19 (gene) — H19 is gene for a non coding RNA, found in humans and elsewhere. This gene seems to have a role in some forms of cancer.The H19 gene is also known as ASM, ASM1 and BWS, among others.cite web | url =… …   Wikipedia

  • Medea (gène) — Medea (de l anglais Medea, Maternal Effect Dominant Embryonic Arrest : « arrêt embryonnaire dominant d effet maternel ») est un gène égoïste composé d’une toxine et de son antidote. Une mère portant le gène « Medea »… …   Wikipédia en Français

  • Medea gene — Medea is a gene from the fruitfly Drosophila melanogaster that was one of the first two Smad genes discovered. For both genes, the maternal effect lethality was the basis for selection of their names. Medea was named for the mythological Greek… …   Wikipedia

  • Gap gene — A gap gene encode transcription factors in a developing embryo. They fall under the class of segmentation genes that are expressed during embryonic morphogenesis. Mutations in gap genes are responsible for the loss of contiguous body segments.… …   Wikipedia

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