In the Human Genes for B-Globin,a Locus Control Region Is

question 25

Multiple Choice

In the human genes for b-globin,a locus control region is characterized by

• A) regulating the expression of the b-globin gene.
• B) containing several DNAse I hypersensitive sites.
• C) being about 15 kb in length.
• D) acting upstream of the genes it affects.
• E) All of these are correct.

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Definitions:

Noncoding DNA

Segments of DNA that do not code for proteins but have roles in regulating gene expression and maintaining chromosome structure, among other functions.

Junk DNA

Refers to regions of DNA that are noncoding, once thought to have no function but now understood to have regulatory roles.

Genetic Markers

Specific sequences of DNA that can be used to identify individuals or species and to track inherited diseases.

DNA Segments

Sections of DNA that carry genetic information, crucial for heredity and the functioning of organisms.