10 Jun Gene regulation in eukaryotes includes all of the following levels
Question
Gene regulation in eukaryotes includes all of the following levels of control
(I) Gene regulation in eukaryotes includes all of the following levels of control except:
a. controls that affect the rate of gene transcription.
b. Controls that govern cutting and splicing g of mRNA transcripts.
c. Controls that affect the precision of mRNA transcription.
d. Controls that regulate which mRNA transcripts will be translated into polypeptides.
II. True-False statements. Indicate your choice with either T or F. (up to 12 pts.)
____ Environmental factors, such as ionizing radiation, UV radiation and chemicals can
damage DNA.
____ A point mutation is a change in one of the bases, and may have neutral outcomes.
____ Transposons are sometimes, and frivolously, called “jumping genes”.
____ James Watson and Francis Crick thought that protein is a big part of DNA.
____ Barbara McClintock suggested that transposable genetic elements are responsible
for mottling in maize kernels.
____ Gregor Mendel suggested that “blending” produced phenotypic variation.
____ An operon is made up of genes that are grouped and regulated together.
____ Steroid hormones are signaling molecules that are made up of cholesterol.
____ Tumor-suppressor genes are inactivated when they undergo mutation, thereby
allowing cancerous growth.
____ Telomeres become longer and longer, every time a cell replicates itself.
____ Homeotic genes are “master control genes” that encode translation factors, proteins
which work on rRNA.
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