The DNA-binding proteins of almost all regulatory proteins use one of a small set of shapes that enable them to fit into the DNA major groove. These shapes are called
A. structural motifs.
B. DNA prints.
C. fingerprints.
D. repressors.
E. transcriptional domains.
A. structural motifs.
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Which of the following has the most similarity in nucleotide sequence?
A. homologous chromosomes B. non-homologous chromosomes C. sister chromatids D. complementary strands of DNA E. maternal and paternal versions of the same chromosome
Organs are composed of tissues, which are composed of cells. This is an example of which characteristic of life?
A. Living things grow and develop B. Living things respond to stimuli C. Living things maintain themselves by homeostasis. D. Living things have levels of hierarchical organization. E. Living things are adapted to the environment.
Protein phosphorylation, protein folding, and proteolytic cleavage are all examples of
A) post-transcriptional control of gene expression and activity. B) epigenetic control of inheritance. C) repression of gene expression. D) induction of gene expression. E) post-translational control of gene expression and activity.
Many diseases are caused by genes that do not function properly. Which technology involves replacing a defective gene with a normal gene?
A) pharmacogenomics B) recombinant DNA C) gene therapy D) cloning