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Ladder

Ladder

1. A frame usually portable, of wood, metal, or rope, for ascent and descent, consisting of two side pieces to which are fastened cross strips or rounds forming steps. Some the engines play, And some, more bold, mount ladders to the fire. (Dryden)

2. That which resembles a ladder in form or use; hence, that by means of which one attains to eminence. Lowliness is young ambition's ladder. (Shak) fish ladder. See fish. Ladder beetle, a spiral marine shell of the genus scalaria. See scalaria.

Origin: oe. Laddre, as. Hlder, hldder; akin to OFries. Hladder, OHG.leitara, g. Leiter, and from the root of E. Lean, v. See lean, and cf. Climax.


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Any SOLID arguments against evolution?

... genetically. What do you mean by "up the evolutionary scale"? Are you applying some sort of medieval theory of biology here, the ladder of life or chain of being? How do you define "up" and why would bacteria be expected to move in that direction? No.5 Cyanobacteria ...

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by alextemplet
Tue May 26, 2009 2:53 am
 
Forum: Evolution
Topic: Any SOLID arguments against evolution?
Replies: 106
Views: 16676

SDS-PAGE

... lysate from RAP-pGEX-2T cells after IPTG induction sample 4-our purified GST-RAP protein sample and we also loaded a molecular mass protein ladder. in our book we have a picture of a ladder starting from 10kD up till 250kD and next to it it has a bunch of proteins such as albumin from bovie ...

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by biology_06er
Mon Mar 23, 2009 3:58 am
 
Forum: Molecular Biology
Topic: SDS-PAGE
Replies: 1
Views: 751

Biochemical question?

Yeah, and that's what makes the question so strange. Evolution is not linear; it is more like a branching tree than some sort of straight line or ladder. Bacteria can be considered to be just as highly evolved as humans.

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by alextemplet
Fri Feb 20, 2009 4:24 am
 
Forum: Genetics
Topic: Biochemical question?
Replies: 3
Views: 509

Re: Fungal DNA extrtaction problem

... sorry i did not pick your point, if you could explain clearly? I have compared my extracted DNA with Limbda DNA (Hind III digested) and 1 kb DNA ladder. all the time its greater then 10 kb band and less then 24 kb of Limbda DNA.

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by shin2
Mon Feb 16, 2009 2:32 pm
 
Forum: Molecular Biology
Topic: Fungal DNA extrtaction problem
Replies: 2
Views: 386

SYBR gold in acrylamide gel

... of Sybr gold fluorescence. Since you see the xylene cyanol, that means that the DNA is correctly loaded. Do you put a molecular weight ladder. If you see it then the problem is likely your sample. If you don't I wonder if your SYBR gold has not degraded...

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by canalon
Sat Nov 01, 2008 3:12 am
 
Forum: Molecular Biology
Topic: SYBR gold in acrylamide gel
Replies: 4
Views: 1030
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