Responsible scientists provide ____ to back up their statements
a. hypotheses
b. predictions
c. evidence
d. controls
e. problems
C
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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.
According to the most widely accepted hypothesis, the origin of the nuclear genome involved
A. an endosymbiotic relationship between an archaeon and a bacterium. B. an endosymbiotic relationship between two archaeons. C. an endosymbiotic relationship between two bacterium. D. a symbiotic relationship between an archaeon and a bacterium. E. a symbiotic relationship between two archaeons.
The mechanisms that control the number of crossover events in a cell have been well characterized
Indicate whether the statement is true or false.
Explain the cohesion-tension theory. What will be an ideal response?