Dictionary » F » Fin



1. (Science: marine biology, zoology) An organ of a fish, consisting of a membrane supported by rays, or little bony or cartilaginous ossicles, and serving to balance and propel it in the water.

fishes move through the water chiefly by means of the caudal fin or tail, the principal office of the other fins being to balance or direct the body, though they are also, to a certain extent, employed in producing motion.

2. (Science: marine biology) a membranous, finlike, swimming organ, as in pteropod and heteropod mollusks.

3. A finlike organ or attachment; a part of an object or product which protrudes like a fin, as: The hand.

4. A finlike appendage, as to submarine boats. Apidose fin.

5. (Science: anatomy) The dorsal, caudal, and anal fins.

Origin: oe. Finne, fin, as. Finn; akin to D. Vin, g. & dan. Finne, Sw. Fena, L. Pinna, penna, a wing, feather. Cf. Pen a feather.

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MolBio calculations

... have 0.25 ug/100ul = 250 ng/100ul = 2.5 ng/ul. Which is quite useless for you :-D OK, so you have 0.25 ug and you dilute it as follows: 100 ul to fin. volume 500 ul (i.e. 5×). That added to fin. volume 5 ml (i.e. 10×). From that you take 50 ul, which is 1/100th of 5 ml, i.e. 2.5 ng of DNA. and ...

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by JackBean
Wed Dec 04, 2013 8:12 pm
Forum: Molecular Biology
Topic: MolBio calculations
Replies: 1
Views: 1797

Diagnosis: black/brown spots on koi scales; picture included

... just to ask this. Hah. :) I made the (probably unwise) decision to buy a koi a few months ago; I have a 25-gallon tank. He seems to be doing fine, except he started to get a few black/brown spots on some scales. Read this could be ammonia burn. Checked ammonia twice and it's at 0 ppm, but ...

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by animus
Mon Jun 24, 2013 1:30 am
Forum: Zoology Discussion
Topic: Diagnosis: black/brown spots on koi scales; picture included
Replies: 3
Views: 2288

Video: electroporation in zebrafish tails

Anyone for a video? Hyde DR, Godwin AR, Thummel R. In vivo Electroporation of Morpholinos into the Regenerating Adult Zebrafish Tail Fin. J Vis Exp. 2012;(61):e3632 DOI: 10.3791/3632 http://www.jove.com/video/3632/in-vivo-electroporation-of-morpholinos-into-the-regenerating-adult-zebrafish-tail-fin

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by jonmoulton
Thu Mar 29, 2012 8:00 pm
Forum: Molecular Biology
Topic: Video: electroporation in zebrafish tails
Replies: 0
Views: 885


... http://www.liveinternet.ru/showjournal.php?journalid=2443535&tagid=1022068 Etc. Further. Human embryo at an early stage has gills, caudal fin ... But he can not use them. This is because genetic technology support was lost when the larva was in the placenta. Or in the egg. Macro-devolution ...

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by LeoPol
Mon Sep 26, 2011 9:40 am
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 560
Views: 907049

Writer in need of help.

... out how they can have the upper body strength like a human, while lacking a collar bone. I figure prominant ridges, similar in concept to the bone fin on a gorrillas head, to provide muscle connections erupting from ribs.

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by Otakon
Wed Sep 15, 2010 6:54 pm
Forum: General Discussion
Topic: Writer in need of help.
Replies: 9
Views: 5566
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