Definition: undeveloped; rudimentary; N. embryo: organism in the early stage of development
Definition: undeveloped; rudimentary; N. embryo: organism in the early stage of development
Sentences Containing 'embryonic'
In the next chapter I shall consider the geological succession of organic beings throughout time; in the twelfth and thirteenth, their geographical distribution throughout space; in the fourteenth, their classification or mutual affinities, both when mature and in an embryonic condition.
It is a significant fact that even in man, according to the high authority of Virchow, the beautiful crystalline lens is formed in the embryo by an accumulation of epidermic cells, lying in a sack-like fold of the skin; and the vitreous body is formed from embryonic subcutaneous tissue.
It is notorious that the wings of birds and bats, and the legs of horses or other quadrupeds, are undistinguishable at an early embryonic period, and that they become differentiated by insensibly fine steps.
On this view of the meaning of embryological resemblances, and indeed on any view, it is incredible that an animal should have undergone such momentous and abrupt transformations as those above indicated, and yet should not bear even a trace in its embryonic condition of any sudden modification, every detail in its structure being developed by insensibly fine steps.
But there can be no doubt that embryonic, excluding larval characters, are of the highest value for classification, not only with animals but with plants.
A trace of the law of embryonic resemblance occasionally lasts till a rather late age: thus birds of the same genus, and of allied genera, often resemble each other in their immature plumage; as we see in the spotted feathers in the young of the thrush group.
In most cases, however, the larvae, though active, still obey, more or less closely, the law of common embryonic resemblance.
In two or more groups of animals, however much they may differ from each other in structure and habits in their adult condition, if they pass through closely similar embryonic stages, we may feel assured that they are all descended from one parent-form, and are therefore closely related.
Thus, community in embryonic structure reveals community of descent; but dissimilarity in embryonic development does not prove discommunity of descent, for in one of two groups the developmental stages may have been suppressed, or may have been so greatly modified through adaptation to new habits of life as to be no longer recognisable.
Obviously this aquatic organisation has no reference to the future life of the animal, nor has it any adaptation to its embryonic condition; it has solely reference to ancestral adaptations, it repeats a phase in the development of its progenitors."
Hence rudimentary organs in the adult are often said to have retained their embryonic condition.
Can we suppose that rudimentary teeth, which are subsequently absorbed, are beneficial to the rapidly growing embryonic calf by removing matter so precious as phosphate of lime?
On the view of each organism with all its separate parts having been specially created, how utterly inexplicable is it that organs bearing the plain stamp of inutility, such as the teeth in the embryonic calf or the shrivelled wings under the soldered wing-covers of many beetles, should so frequently occur.
A striking difference in embryonic development has led to the division of this class into two great groups; in one of these, when the embryo has attained a certain stage, a vascular connection, called the PLACENTA, is formed between the embryo and the mother; in the other this is wanting, and the young are produced in a very incomplete state.
New Feminists believe that women are structured to protect their children, and they believe it to be a particular injustice when women support abortion, infanticide, embryonic stem cell research, or in-vitro fertilization.
HU-210 promotes proliferation, but not differentiation, of cultured embryonic hippocampal neural stem and progenitor cells likely via a sequential activation of CB1 receptors, Gi/o proteins, and ERK signaling.
Signalling by LIFR intracellular domain homodimerisation has been demonstrated in hepatoma and neuroblastoma cells, embryonic stem cells and COS-1 cells by utilizing chimeric receptors that homodimerise upon stimulation with their cognate cytokines (i.e. GCSF, neurotrophin-3, EGF).
Because the UK market was embryonic, Wagner relocated to New York City in January 1986.
Chordin was originally identified in Xenopus laevis as a key developmental protein that dorsalizes early vertebrate embryonic tissues.
Some of the positions were made clear on embryonic stem cell research and abortion.
In the mouse DARC is expressed during embryonic development between days 9.5 and 12.
In March 2009, Obama reversed a Bush-era policy which had limited funding of embryonic stem cell research and pledged to develop "strict guidelines" on the research.
Expression of these proteins is spatially and temporally regulated during embryonic development.
HOXA2 controls the embryonic development of the lower and middle part of the face and of the middle ear.
miRNA libraries constructed from cloning and sequencing short RNAs derived from cultures of mouse embryonic stem cells have shown miR-92 to be expressed.
Harper won the contest. Vellacott continued to support socially conservative causes as a Canadian Alliance MP, and was a vocal opponent of embryonic stem-cell research in 2002, although he supports adult stem cell research.
Like other members of its family, the porbeagle is aplacental viviparous with oophagy, i.e. the main source of embryonic nutrition are unfertilized eggs.
The overall embryonic growth rate is per month.
The sound produced was very embryonic, however it gave the band a direction as to how the track should sound.
In enterocoely, a mesoderm is formed in a developing embryo, in which the coelom forms from pouches "pinched" off of the digestive tract (also known as the embryonic gut, or archenteron).
The notch signaling pathway is important for cell-cell communication, which involves gene regulation mechanisms that control multiple cell differentiation processes during embryonic and adult life.
The Notch signaling pathway plays an important role in cell-cell communication, and further regulates embryonic development.
For example, the finding that an embryonic lethal phenotype in "Drosophila" was associated with Notch dysfunction indicated that Notch mutations can lead to the failure of neural and Epidermal cell segregation in early "Drosophila" embryos.
The presence of miR-34 products has also been confirmed in embryonic stem cells.Recently Soni et al., have shown that miR-34 is maternally inherited in drosophila and zebrafish . Targets of miR-34.
LRH-1 is important for maintaining pluripotence of stem cells during embryonic development.
Described as the "godfather of the modern conservative, austerity movement", he supports term limits, gun rights and the death penalty and opposes gay rights and embryonic stem cell research.
A chemical analysis of the elemental composition of the gelatinous outer layer, the embryonic receptacle and the gleba showed the gelatinous layer to be richest in potassium, calcium, manganese, and iron ions.
Calcium2+ stabilizes the polysaccharide gel, protecting the embryonic receptacle from drying out during the growth of the egg.
Oocytes can be unusually large cells in species for which embryonic development takes place away from the mother's body.
An embryonic city regional framework exists in the form of the Passenger Transport Executive and the Core Cities Group.
Analysis of the transcriptomes of human oocytes and embryos is used to understand the molecular mechanisms and signaling pathways controlling early embryonic development, and could theoretically be a powerful tool in making proper embryo selection in in vitro fertilisation.
These stems cells are pluripotent, meaning they can be manipulated to differentiate into various types of mature cells that make up nerve, muscle, bone, and other tissues while avoiding the problems of tumor formation and ethical concerns that are associated with embryonic stem cells.
There are frequent associated congenital anomalies all related to deviations in the development of anatomical asymmetries in early embryonic stages.
Fatah's embryonic aerial unit was formed sometime in 1968/69 from a modest core of several dozen pilots and technicians trained in Algeria, Morocco and Libya.
“Symbol of Rebirth”, celebrates evolution and rebirth, itself evolving from the primitive forms at the base rising to an embryonic form in a pelvic structure.
Human embryonic stem cells also more readily differentiate into cortical stem cells in the presence of retinoids Retinoids are known to reduce the risk of head and neck cancers.
A coloboma, or hole, may form in or near the optic disc due to a failed closure of embryonic tissue.
Bipolar cells are also found in the spinal ganglia, when the cells are in an embryonic condition.
In a further reappraisal, the molars of embryonic and fossil monotremes (living monotreme adults are toothless) appear to demonstrate an ancestral pattern of cusps which is similar to the triangular arrangement observed in therians.
Among the locations where the movie was shot was the famous Disco Fever, a popular club during the embryonic stages of hip hop that, by the time of the film, had fallen on some hard times.
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