Humans with the disease xeroderma pigment sum (XP) have a defect in nucleotide-e

Question

Humans with the disease xeroderma pigment sum (XP) have a defect in nucleotide-excision repair which causes them to be especially sensitive to because nucleotide-excision repair is the chief mean that humans use to repair the alterations it causes. depurination ultraviolet light ionizing radiation errors in replication caused by DNA polymerase delaminating agents the principal element providing structural support for the shape of the nucleus is a meshwork of microtubules attached to the cytoplasmic face of nuclear envelope a meshwork of intermediate filaments attached to the interior face of the nuclear envelope the chromatin scaffolding proteins for each chromosome a meshwork of straight polysaccharide chains attached to the exterior surface of the nuclear envelope a meshwork of branched polysaccharide chains located in the perinuclear space Most alterations of bases or nucleotides are mutagenic. Which of the following is a type of alteration or modification of nucleotides in

Explanation / Answer

Ans 5 B ultravoilet light

It is an inherited condition characterised by an extreme sensitivity to ultraviolet rays from sunlight. Inherited mutations in approx 8 genes have been found to cause this disesase.

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