Dictionary » P » Precursor



Something that precedes.

1. (Science: biochemistry) In biological processes, a substance from which another, usually more active or mature substance is formed.

2. In clinical medicine, a sign or symptom that heralds another.

Origin: L. Praecursor = a forerunner

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How does DNA cladistics work???

... taxa consistent with "inferred characters," that is qualities or characteristics imparted particularly by the taxa and their regular precursor.

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by pioneer07
Tue Feb 04, 2014 9:47 pm
Forum: Zoology Discussion
Topic: How does DNA cladistics work???
Replies: 2
Views: 3241

Re: How Genes/expression Determine Organism Shape

... interactions leading to cell differentiation and/or cell death. I will try giving the most simplistic embryo example. You have 3 layers of cells (precursors that can become anything). Cells in layer 1 and 3 sense another cell layer on one side only and "environment" on the other side. ...

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by Cat
Mon May 20, 2013 1:41 pm
Forum: Genetics
Topic: How Genes/expression Determine Organism Shape
Replies: 2
Views: 6456


... If you remove our BIAS that we are MORE advanced than whatever existed years ago, you start to see that it's just as likely that eukaryote lost precursor of mitochondria and that gave rise to bacteria and so on. My problem with evolution in particular and with biology in general is that people ...

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by Cat
Thu Oct 11, 2012 2:11 am
Forum: Evolution
Topic: Are evolution and creationism mutually exclusive???
Replies: 24
Views: 18642

Beet Root Pigment

As a precursor to HCL in the stomach (Betaine).

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by jinx25
Sun Oct 07, 2012 4:47 pm
Forum: General Discussion
Topic: Beet Root Pigment
Replies: 7
Views: 5003

question for evolutionary biologist.

... biologist. Postby scottie » Tue Aug 28, 2012 1:23 pm Jackbean It is Venter's claim that his team “created a new species without any biological precursor.” It was he that referred to this as a “proof of concept”

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by JackBean
Tue Sep 18, 2012 5:35 am
Forum: Evolution
Topic: question for evolutionary biologist.
Replies: 26
Views: 34557
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