Dictionary » X » Xeroderma




(pathology) Abnormal skin dryness charactized by dry, scaly, cracked and itchy skin; xerosis of the skin, especially in the arms and legs; ichthyosis


The skin that is excessively dry is described to be xerotic. Several factors bring about xeroderma. Some of them include dehydration, Vitamin A deficiency, atopic dermatitis, and hot, humid environment.

Word origin: Greek xeros (dry) + dermia (skin)


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Re: Passing on mutations?

... over also,although it's rare. http://www.ncbi.nlm.nih.gov/bookshelf/br.fcgi?book=mga&part=A683 Effective repair system lowers mutation rate..xeroderma pigmentosum,ataxia telangiectasia and many other disorders have deffective repair system @JackBean Maybe because histone modifications affect ...

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by zami'87.
Tue Nov 17, 2009 7:42 am
Forum: Evolution
Topic: Passing on mutations?
Replies: 8
Views: 5171

Re: Natural selection is proven wrong

... Syndrome * Urea Cycle Disorder * Usher's Syndrome * Velocardiofacial Syndrome * von Hippel-Lindau Disease * Werner Syndrome * Williams Syndrome * Xeroderma Pigmentosum * XXX Syndrome * XYY Syndrome

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by gamila
Thu Apr 23, 2009 4:16 am
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 247
Views: 689108

DNA Repair enzymes

... away is less likely to be around for a second or third try at repair, it seems to me. Lack of repair enzymes can be involved in certain diseases--Xeroderma pigmentosa comes to mind; there may be others. I'm not aware of anyone trying to genetically enhance themselves by overexpressing their DNA ...

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by blcr11
Tue May 06, 2008 5:27 pm
Forum: Molecular Biology
Topic: DNA Repair enzymes
Replies: 1
Views: 2013

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