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Xenopus

Xenopus

(Science: molecular biology) The genus of african clawed toads, X. Laevis is widely used in developmental biology and was formerly used in pregnancy diagnosis. Ovulates easily under influence of luteinising hormone.


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Re:

S. viridans is not a species. All spreptococci irrespective of haemolysis type have been currently divided into seven genetically distinct groups: pyogenic streptococci (S. pyogenes, S.agalactiae, S. dysgalactiae) - group I; Str. bovis group (II); Str. mitis group (S. mitis, S. pneumoniae, S. orali...

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by SweetSarah
Tue Mar 06, 2012 4:37 am
 
Forum: Microbiology
Topic: Is Strep mitis a member of the Strep Viridans species
Replies: 7
Views: 5413

Re: difference between over-expression and a genomic rescue

... into cells or by introducing exogenously-transcribed mRNA into cells. This is a common technique in embryo studies, where (at least for zebrafsih, Xenopus, sea urchins and Ciona) the plasmid or mRNA us generally microinjected into the early zygote though a thin glass needle so that after mitosis ...

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by jonmoulton
Thu May 26, 2011 4:14 pm
 
Forum: Molecular Biology
Topic: genomic rescue
Replies: 3
Views: 5296

Re: Can a gene be situated at multiple loci in a genome?

Yes, there are such genes, like for rRNA are many copies in tandem (e.g. in human about 200 copies, in Xenopus even 600 copies) and also for histones, I think. But also, there are sometimes genes duplicated by chromosome rearragnment. In that case, whole part of chromosome ...

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by JackBean
Tue Nov 03, 2009 7:20 am
 
Forum: Genetics
Topic: Can a gene be situated at multiple loci in a genome?
Replies: 4
Views: 3096

Frog Egg Physilogy

... just put them in distilled water and the put them in the PCR reaction. Anyway, i think that you would have better chance looking up a protocol for Xenopus laevis, people have been studying the eggs of that organism for decades. Then try that and see if it works

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by MrMistery
Thu Apr 23, 2009 1:54 pm
 
Forum: Zoology Discussion
Topic: Frog Egg Physilogy
Replies: 2
Views: 4663

Re: IBO 2003 questions- please help me out

... proteins that were, as best as I could find, equally distant from a human protein. Here’s what I found.: Histone H1 (Human) is 72% identical to Xenopus (frog) H1 and 54% identical to Sea Urchin H1 DNA Polymerase A (Human) is 67% identical to Xenopus Polym A and 37% identical to Arabadopsis (a ...

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by blcr11
Tue May 13, 2008 10:29 pm
 
Forum: Cell Biology
Topic: IBO 2003 questions- please help me out
Replies: 9
Views: 9580
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