What is the consequence of methylation of DNA sequences called CpG islands?
A. insulator sequence formation
B. transcriptional stalling
C. transcription repression
D. active transcription
E. recruitment of chromosome-remodeling complex
Ans: C. transcription repression
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In the early twentieth century, ____ discovered that genes are carried on chromosomes
a. Thomas Hunt Morgan b. Francis Crick c. Gregor Mendel d. James Watson e. Thomas Huxley
The endomembrane system did not start developing
until the atmosphere was a. high oxygen, high carbon dioxide. b. high hydrogen, low oxygen. c. changing from low oxygen to high oxygen. d. firmly in the age of aerobes. e. all of these.
All of the following statements are true concerning
mycorrhizae EXCEPT that a. the fungus may penetrate into root cells. b. mycorrhizae increase the surface area for absorption. c. roots obtain minerals from the fungus. d. the fungus provides the plant with nitrogen-rich compounds. e. the plant provides the fungus with sugar.
Comparative genomics is the field of genomics that studies the functions of genes and nongene sequences in genomes. Indicate whether the statement is true or false