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zygotic ratio

См. также в других словарях:

  • Maternal to zygotic transition — (MZT) is the stage in embryonic development during which development comes under the exclusive control of the zygotic genome. This requires both zygotic genome activation (ZGA) and degradation of maternal products. MZT is often thought to be… …   Wikipedia

  • Self-incompatibility in plants — Self incompatibility (SI) is a general name for several genetic mechanisms in angiosperms, which prevent self fertilization and thus encourage outcrossing. In plants with SI, when a pollen grain produced in a plant reaches a stigma of the same… …   Wikipedia

  • Plant embryogenesis — is the process that produces a plant embryo from a fertilised ovule by asymmetric cell division and the differentiation of undifferentiated cells into tissues and organs. It occurs during seed development, when the single celled zygote undergoes… …   Wikipedia

  • Cleavage (embryo) — In embryology, cleavage is the division of cells in the early embryo. The zygotes of many species undergo rapid cell cycles with no significant growth, producing a cluster of cells the same size as the original zygote. The different cells derived …   Wikipedia

  • Midblastula — In developmental biology, midblastula or midblastula transition (MBT) is a stage during embryonic development in which zygotic gene transcription is activated. There are three major characteristics of pre MBT embryos. Firstly, all of the… …   Wikipedia

  • Bibliographie Sur La Sérendipité — Article principal : sérendipité. Ouvrages et articles traitant de la sérendipité. Sommaire 1 Bibliographie générale 2 Bibliographie Chimie 3 Bibliographie économie …   Wikipédia en Français

  • Bibliographie sur la serendipite — Bibliographie sur la sérendipité Article principal : sérendipité. Ouvrages et articles traitant de la sérendipité. Sommaire 1 Bibliographie générale 2 Bibliographie Chimie 3 Bibliographie économie …   Wikipédia en Français

  • Bibliographie sur la sérendipité — Article principal : sérendipité. Ouvrages et articles traitant de la sérendipité. Sommaire 1 Bibliographie générale 2 Bibliographie Chimie 3 Bibliographie économie …   Wikipédia en Français

  • Twin — Monozygotic ( identical ) twins A twin is one of two offspring produced in the same pregnancy.[1] Twins can either be monozygotic (in common parlance, identical ), meaning that they develop from one zygote that splits and forms two embryos, or… …   Wikipedia

  • UK Singles Chart records — Since the inception of the UK Singles Chart in 1952 there have been various records to break, including most chart toppers, longest run at number one, biggest selling single etc. All the records have changed hands over the years, some more than… …   Wikipedia

  • List of Peel sessions — This is a list of artists (bands and individual musicians) who recorded at least one session for John Peel and his show on BBC Radio 1 from 1967 to his death in 2004. the first session was recorded by Tomorrow on 21 September 1967, and the last… …   Wikipedia

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