How To Use Planarian In A Sentence
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The expression of Djhox#1053 in X-ray irradiated planarians cut two days after irradiation, was tested by whole mount in situ hybridization.
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Make a classroom wall dictionary of all the new worm words your students are learning: annelid, fanworm, earthworm, flatworm, leech, lugworm, nematode, planarian, ribbonworm, spoonworm, tapeworm… to name several.
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Here is a picture I took in the field; the planarian was still on the underside of the log.
Bipalium adventitium
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I wrote about the land planarian Bipalium adventitium in this post.
Bipalium adventitium
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Irrespective, this evidence establishes the existence of actively crawling organisms, almost certainly bilaterians, and almost certainly above the grade of planarians because of the implied hydrostatic skeleton.
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In planarian worms, Pax6 orthologs are expressed in developing eyes, but do not appear to be required for eye development.
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In Hydrozoans the same orthologous six genes are required for eye regeneration as in planarians, and in the box jellyfish Tripedalia a pax B gene, which may be a precursor of Pax6, was found to be expressed in the eyes.
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In planarian regeneration, they could be instrumental to transforming the homogeneous blastema and postblastema fields into discrete patterned regions.
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He received his Ph.D. in 1902 working on the behavior of planarians and stayed on as instructor of zoology until 1906.
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Planarians are free-living flatworms, and have a much simpler life history.
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He and his colleagues worked primarily on hydroids and planarians.
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The neoblast system is best characterized in planarians and macrostomids.
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Nevertheless, duplication of Hox genes has been observed, notably in the planarian D. tigrina in which the genes DtGtHoxC and DtGtHoxE were proposed to derive from a recent duplication event.
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Some animals also show great ability to regenerate: small fragments of animals such as starfish, planarians, and Hydra can give rise to a whole animal.
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In order to prove that the amounts of genomic DNA in planarians and Cladonema were enough for single-copy gene detection under the experimental condition, the Cladonema Pax-B paired box was used to probe the same blot.
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I have selected an unfortunate earthworm from the backyard and will be giving it to the planarian soon.
Archive 2009-09-01
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The mostly free-living Turbellaria include the planarian, Dugesia, shown above; these are found in the oceans, in fresh water, and in moist terrestrial habitats, and a few are parasitic.
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Thus, we conclude that neoblasts, the totipotent stem cells in the planarians, of acquired sexuals remain ‘asexual’ and the worms require external supply of a sexualizing substance for the differentiation of sexual organs and gametes.
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The planarians used in these studies, also called flatworms, live in fresh water and have a singular ability to regenerate.
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Around the same time, they reported that planarians move away from intense visible light, and they showed that even blinded planarians are negatively phototaxic.
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We then conducted competitive hybridization experiments of cDNAs between a head portion and the other body portion of planarians in order to screen genes specifically expressed in a planarian brain.
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By using its pharynx, cannibalic planarian feeds on the decayed animals, eat worms (especially earthworms), snails, and other small animals.
CreationWiki - Recent changes [en]
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The planarian hasn't eaten for at least about 50 hours.
Bipalium adventitium
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To test the function of Hox genes in anteroposterior axis specification in flatworms, single, double and triple injections of dsRNA of Dthox-D and C and GtAbdBb in intact and regenerating planarians are presently being studied.
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Here we describe trans-splicing in the freshwater planarian Schmidtea mediterranea, a free-living member of the phylum Platyhelminthes.
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Some of these genes have already been found in freshwater planarians, polyclads and acoels, but their expression is still unknown.
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As usual, I was looking for slugs and snails and there was this planarian crawling around the roots of a tree.
Archive 2009-06-01
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And now for something completely different: the land planarian Bipalium adventitium.
Archive 2009-06-01
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I have selected an unfortunate earthworm from the backyard and will be giving it to the planarian soon.
Archive 2009-09-01
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In planarian regeneration, they could be instrumental to transforming the homogeneous blastema and postblastema fields into discrete patterned regions corresponding to the lost elements.
