When native chromatin is digested with micrococcal nuclease, what significant result occurs?
What will be an ideal response?
DNA fragments of approximately 200 base pairs in length are formed.
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Which of the following must a pathogen possess in order for it to be successful at causing infectious disease?
A. Ability to be transported initially to the host B. Ability to exit the host C. Ability to damage the host D. Ability to adhere to, colonize, or invade the host E. All of the choices are correct.
A kilowatt, a unit of electrical power, is
a. 10 watts. b. 100 watts. c. 1000 watts. d. 1,000,000 watts.
DNA is associated with proteins, forming a complex called:a
chromosomes. b. nucleoli. c. nucleus. d. genes. e. chromatin.
A human embryologist examines a 3-week-old embryo and notices that it has not developed a notochord. If the embryo survives, it will lack
A) a heart and lungs. B) skin and blood vessels. C) a stomach and a pancreas. D) a brain and a spinal cord.