Histone variants:
A. have been identified for H2B and H4 but not for H2A and H3.
B. differ in their C-terminal sequences but not in their N-terminal sequences.
C. that have been identified are associated with transcriptional activation only.
D. have variant patterns of modifications as a result of the structural differences in their terminal sequences.
E. have been found to affect all cellular processes that involve DNA except DNA repair.
D
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a. for convenience in production b. all of the choices c. to increase food yield d. for medical research
In familial hypercholesterolemia, individuals who are homozygous for the mutation lack LDL cholesterol receptors in the liver, causing high levels of serum cholesterol
This is a defect in which type of gene pathway: a biosynthetic, signal transduction, or developmental pathway?
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