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Invertebrate

Invertebrate

(Science: zoology) destitute of a backbone; having no vertebrae; of or pertaining to the invertebrata.

One of the invertebrata. Age of invertebrates. See age, and silurian.


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Re: Chicken or egg formed first

... for some hundred million years, which is evolved from reptiles, digging the phylogeny from reptiles shows following order amphibians, fishes, invertebrates finally prokaryotes. Up to invertebrate has egg laying capability.

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by devil20
Sat Sep 13, 2014 9:41 am
 
Forum: Evolution
Topic: Chicken or egg formed first
Replies: 5
Views: 793

Chicken or egg formed first

... story in chronological order (follow the phylogeny), egg-chicken-egg-chicken-egg-…………..-reptiles-egg…………-amphibians-egg…………..-fishes-egg…………..-invertebrate- egg …………prokaryotes-prokaryote-prokaryote…… So very distant ancestors of chicken had no egg laying capability.

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by josem
Sun Aug 17, 2014 8:24 pm
 
Forum: Evolution
Topic: Chicken or egg formed first
Replies: 5
Views: 793

Chicken or egg formed first

... for some hundred million years, which is evolved from reptiles, digging the phylogeny from reptiles shows following order amphibians, fishes, invertebrates finally prokaryotes. Up to invertebrate has egg laying capability. If we considering the question egg or chicken formed first, we can ...

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by josem
Thu Jul 17, 2014 7:14 pm
 
Forum: Evolution
Topic: Chicken or egg formed first
Replies: 5
Views: 793

PCR from cDNA question

... so I hope the brilliant minds here can shed some light on it. The total RNA was extracted from ~100 whole embryos (~1000 cells each) of an invertebrate marine species using QIAGEN RNeasy Plus mini kit eluted with 40ul RNase free water. Nanodrop gives a low reading and a weak absorption ...

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by vastgenome
Fri Jun 22, 2012 3:55 pm
 
Forum: Molecular Biology
Topic: PCR from cDNA question
Replies: 1
Views: 3230

Re: 5 best proofs of evolution

... skeletal structure featuring a backbone and skull. We call these animals vertebrates. Most animals do not have these features (we call them invertebrates). The distinction between vertebrates and invertebrates is something no one who cares to look at samples of both can reasonably deny, ...

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by Raven7899
Sun May 27, 2012 11:46 am
 
Forum: Evolution
Topic: 5 best proofs of evolution
Replies: 170
Views: 245306
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