Which mechanism of controlling gene expression occurs outside of the nucleus?
A) adding a cap and tail to RNA
B) DNA packing/unpacking
C) RNA splicing
D) translation
Answer: D
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Insulators:
A. are boundary elements that function to prevent the enhancer for one gene from activating the promoter of another gene. B. are DNA sequences that can prevent packaging of a gene into heterochromatin. C. require the zinc-finger protein CTCF to function in higher eukaryotes. D. All of the choices are correct.
Sexual reproduction involves ____
a. one diploid cell fertilizing a haploid cell b. the union of two somatic cells c. the union of male and female gametes d. a single mitotic division of the parent cell to produce a daughter cell e. the union of two gametes to produce a haploid zygote
Patients suffering from familial adenomatous polyposis coli have typically been found to have _________, which is the site of the _________.
a) a small chromosome 5 deletion, APC oncogene b) a small chromosome 5 duplication, APC tumor-suppressor gene c) a small chromosome 5 deletion, APC tumor-suppressor gene d) a small chromosome 15 deletion, RP tumor-suppressor gene e) a small chromosome 6 deletion, APC tumor-suppressor gene
Transcription begins near a site in the DNA called the
A. promoter B. transcription unit C. enhancer D. regulatory sequence E. response element