Dictionary » A » Arrowhead



1. (Science: botany) An aquatic plant of the genus Sagittaria, especially. S. Sagittifolia, named from the shape of the leaves.

2. (Science: cell biology) fanciful description given to the pattern of myosin molecules attached to a filament of f actin. Easier to see if tannic acid is added to the fixative. The arrowheads indicate the polarity of the filament, the barbed (attachment) end is the site of major subunit addition.

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probing mRNA and RT-PCR products

... - (1kb? exon 2 only) 3) What size RT-PCR product would be amplified from mRNA using the following primers (the primers are labelled as p1-p5, the arrowhead indicated the 3' end): a)P1+P2 - (none? contains only intron) b)P2+p3 - (none? the orientation of the primer does not allow synthesis, needs ...

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by SarahTessler
Thu Jun 09, 2011 4:22 am
Forum: Molecular Biology
Topic: probing mRNA and RT-PCR products
Replies: 4
Views: 2856

Science on evolution

... 8. How could sexual reproduction evolve? (See page 18.) How could immune systems evolve? (See page 18.) 9. If it takes intelligence to make an arrowhead, why doesn’t it take vastly more intelligence to create a human? Do you really believe that hydrogen will turn into people if you wait long ...

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by Linn
Thu Feb 02, 2006 3:24 pm
Forum: Evolution
Topic: Science on evolution
Replies: 30
Views: 19990

Name game

... Well, see the example: #1 post: Hippocampus erectu s = Lined seahorse; northern seahorse (U.S.A.) #2 post: S agittaria latifoli a = Broadleaf Arrowhead, Wapato #3 post: A spergillus fumigatu s = etc. Don't forget to write the name in proper way as Carollus Linnaeus told ;) If you have figure ...

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by Dr.Stein
Mon Jan 30, 2006 10:30 am
Forum: General Discussion
Topic: Name game
Replies: 176
Views: 184824

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