QUE SIGNIFIE HOMEOTIC EN ANGLAIS
L'homéographie
L'homéostose est la transformation d'un organe en un autre, résultant de la mutation ou de la mise en évidence de gènes spécifiques du développement critique. Cela peut être causé par des mutations dans les gènes Hox, trouvés chez les animaux, ou d'autres comme la famille MADS-box dans les plantes. L'homéostomie est une caractéristique qui a aidé les insectes à devenir aussi réussi et aussi diversifiée que possible. Les mutations homéotiques fonctionnent en modifiant l'identité du segment pendant le développement. Par exemple, le génotype Ultrabithorax donne un phénotype dans lequel les segments métasoraciques et premiers abdominaux deviennent des segments mésothoraciques. Un autre exemple bien connu est Antennapedia: un allèle de gain de fonction permet aux membres de se développer à la place des antennes. En botanique, Rolf Sattler a révisé le concept d'homéopathie par son accent sur l'homéopathie partielle, en plus de l'homéopathie complète, ce qui est généralement accepté. On pense que les mutants homéotatiques chez les angiospermes sont rares à l'état sauvage: dans la plante annuelle de Clarkia, on connaît des mutants homéotiques où les pétales sont remplacés par un second pépin d'organes sépales, issus d'une mutation régie par un seul gène récessif.
définition de homeotic dans le dictionnaire anglais
La définition d'homéotique dans le dictionnaire montre, produit ou se rapporte à l'homéose.
MOTS EN ANGLAIS EN RAPPORT AVEC «HOMEOTIC»
homeotic ·
genes ·
generally ·
control ·
transformation ·
mutation ·
code ·
role ·
examples ·
drosophila ·
humans ·
homeosis ·
organ ·
into ·
another ·
arising ·
from ·
misexpression ·
specific ·
developmentally ·
critical ·
caused ·
mutations ·
merriam ·
webster ·
adjective ·
ˌhō ·
ˈä ·
ˌhä ·
relating ·
being ·
gene ·
producing ·
usually ·
major ·
shift ·
biology ·
encyclopedia ·
britannica ·
group ·
pattern ·
body ·
formation ·
early ·
embryonic ·
organisms ·
these ·
encode ·
patterns ·
scientists ·
discovered ·
studying ·
strange ·
transformations ·
fruit ·
flies ·
including ·
feet ·
mouth ·
parts ·
extra ·
pairs ·
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developmental ·
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called ·
10 LIVRES EN ANGLAIS EN RAPPORT AVEC «HOMEOTIC»
Découvrez l'usage de
homeotic dans la sélection bibliographique suivante. Des livres en rapport avec
homeotic et de courts extraits de ceux-ci pour replacer dans son contexte son utilisation littéraire.
1
Homeotic Gene Silencing in Drosophila
Drosophila homeotic genes Polycomb proteins were first discovered as
repressors of homeotic genes that specify segmental determination in Drosophila
(Garcia-Bellido, 1975; Lewis, 1978) (Figure 1.1). It has been shown that the
homeotic ...
Zlatka Petrova Stojanova,
2007
2
High-yield Cell and Molecular Biology
Homeotic. Genes. and. Anterior/Posterior. Body. Pattern. Formation. Illl'll IK I Hill.
In Chapter 12: Control of Gene Expression, we discussed the factors involved in
the differentiation of cells (e.g., hepatocyte vs. pancreatic beta cell); that is, "What
...
3
Biology Today and Tomorrow with Physiology
control the formation of specific body parts. All homeotic genes encode
transcription factors with a homeodomain, a region of about sixty amino acids that
can bind to a promoter or some other DNA sequence. Homeotic genes are one
type of ...
Cecie Starr, Christine Evers, Lisa Starr,
2009
4
Molecular Evolution of Floral
Homeotic B-class Genes in the ...
Comparative study of floral homeotic gene evolution through reconstructing gene genealogy is recognized as an important step toward understanding the molecular genetic basis of morphological evolution.
5
Exploring Genetic Mechanisms
As we have seen, we know much about how the segmentation genes initiate
homeotic gene expression in flies. The gap genes play a particularly important
role in controlling where the homeotic genes are expressed along the A-P axis.
Maxine Singer, Paul Berg,
1997
6
CURRENT TOPICS DEVELOPMENTAL BIOLOGY
advanced, taking advantage of spontaneous mutations causing what Bateson (
1894) termed a homeotic phenotype. Homeosis refers to the substitution of one
organ for another belonging to the same group of serially homologous structures,
...
A. A. Moscona, McLaren, Todd, Alberto Monroy,
1988
7
Genetics: Analysis & Principles:
The role of homeotic genes in determining the identity of particular segments has
been revealed by mutations that alter their function. For example, the Antp gene
is normally expressed in the thoracic region. The Antennapedia mutation causes
...
8
Keywords And Concepts In Evolutionary Developmental Biology
HONG MA Homeotic Genes in Flowering Plants Plants possess several organ
types, including vegetative (e.g., leaves) and reproductive organs. In flowering
plants, reproduction occurs in the flower, which has characteristic types of organs
.
9
Animal Behavior Desk Reference: A Dictionary of Animal ...
1989, 937–938) cf. gene: homeobox-containing gene, homeobox, 2mutuation:
homeotic mutation Comments: Some writers refer to both particular “homeotic-
homeobox genes” and “nonhomeotic-homeobox genes” as simply homeobox
genes ...
10
Essential Developmental Biology
A homeotic mutation is one that can convert one body part into another. How this
can happen is explained by our simple model. Suppose that the organism of Fig.
2.15 is a mutant and that the second gene in the series is permanently inactive ...
Jonathan M. W. Slack,
2012
10 ACTUALITÉS CONTENANT LE TERME «HOMEOTIC»
Découvrez de quoi on parle dans les médias nationaux et internationaux et comment le terme
homeotic est employé dans le contexte des actualités suivantes.
Characterization of an AGAMOUS gene expressed throughout …
Conclusions: The ectopic expression of the Ginkgo AGAMOUS gene in tomato caused the homeotic transformation of the transgenic sepals into ... «7thSpace Interactive, juil 15»
6 Extra Pairs of Genitals Is Just Too Much of a Good Thing
Our well-endowed millipede is a “homeotic mutant.” Somehow, the instructions to make genitals did not get turned off, and the millipede just ... «Wired, mai 15»
UM researchers find new gene involved in blood-forming stem cells
The Ash1l (Absent, small or homeotic 1-like) gene is part of a family of genes that includes MLL1 (Mixed Lineage Leukemia 1), a gene that is ... «U of M News Service, avril 15»
Tiny Cell Grows Giant Death Spike and Lives to Grow Another
The authors also offered a fascinating speculation regarding spicule formation. Many of you may be familiar with the famous Hox (or homeotic) ... «Scientific American, mars 15»
Researchers reveal the secret of radiation vulnerability
Even by the first half of the twentieth century,spineless gene mutations were ranked among the so-called homeotic mutations. Such mutations ... «Medical Xpress, mai 14»
News from the Flight Deck
... developmental data suggests that the evolution of the avian wing digits may have been driven by homeotic transformations of digit identity, ... «Discovery Institute, juil 13»
Mosses Make Two Different Plants From the Same Genome, and a …
The original homeobox/homeotic genes may have functioned early on as regulators of the newfangled sexual cycle, but were then co-opted as ... «Scientific American, mai 13»
When is an arm really a leg?
A homeotic mutation mixes up body parts, so that a fly grows a leg on its head or antennae on its mouth. Assignment of body parts begins in the early embryo, ... «io9, déc 12»
Extinct fossils reveal their genetic pattern
Homeotic genes or Hox genes choreograph the development and patterning of structures from the head to the tail in metazoan animals. «Phys.Org, oct 12»
Zebrafish may help in treating human diseases
"We want to study the mechanism that controls the expression of homeotic genes which control formation of anterior and posterior body axis." «Times of India, juil 12»