Induced mutations are initiated by errors in DNA replication.
Answer the following statement true (T) or false (F)
False
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Okazaki fragments are attached to the growing end of the lagging strand by ________.
A. DNA ligase B. DNA polymerase C. DNA helicase D. DNA gyrase E. primase
Adenoviruses are responsible for causing diseases such as keratoconjunctivitis, pneumonia, hemorrhagic cystitis, and gastroenteritis in children. Transmission is usually via:
a. contact with rodent urine. b. respiratory secretions. c. arthropod vector. d. sexual contact.
Imagine that a cell has a genetic mutation so that the primase enzyme is unable to make RNA strands
Assuming that all of the other enzymes directly involved in DNA replication are still functional in these cells, how much of the process of DNA replication would you expect to see in these cells?
a. The leading strand would be synthesized, but not the lagging strand. b. None of it at all, no part of the DNA replication process could occur. c. The DNA helix would be unwound by helicase, but no new strands will be produced at all. d. Both the leading and lagging strand would be synthesized, but pieces of discontinuous strands would not be joined together. e. DNA replication would still proceed completely, since RNA strands are not part of the final product of DNA replication.
In the United States, how many embryos,
created by IVF, remain frozen?
a. 10,000 b. 50,000 c. 100,000 d. 500,000 e. 1,000,000