What is the function of the parental DNA in replication?
a. It is passed into the offspring of the parent.
b. It gives the cell two complete copies of the DNA.
c. It allows for the DNA to be circular.
d. It serves as the template for DNA replication.
Answer: d. It serves as the template for DNA replication.
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How does a phage transfer DNA from one bacterium to another?
a. Phages form a bridge between bacterial cells that allows DNA to pass from the host cell to the recipient cell. b. Phages form a bridge between bacterial cells that allows DNA to pass in both directions between the two cells. c. Phages lyse bacterial cells, releasing bacterial DNA into the environment, which is taken up by other phages for transfer to new cells. d. When phages assemble in an infected bacterial cell, they may incorporate host DNA; released phages may attach to other cells and inject the bacterial DNA into those cells. e. Phages attach to receptors on bacterial cells and receive some of the target cells’ DNA; the phages release this DNA into the environment to be taken up by other bacterial cells.
Refer to the paragraph on dark-eyed junco birds. The UCSD campus male junco population tails were, on average, 36% white, whereas the tails of males from nearby mountain populations averaged 40-45% white
If this observed trait difference were due to a difference in the original colonizing population, it would most likely be due to _____. A) mutations in the UCSD population B) gene flow between populations C) a genetic bottleneck D) a founder effect
In its non-phosphorylated state, the retinablastoma protein (Rb) binds to and inhibits the activity of:
A. cyclin D B. the E2F transcription factor C. cyclin-dependent kinase D. p53
Rabbits and rodents are the reservoirs of the causative agent of
A) Pertussis B) Legionellosis C) Tularemia D) Shigellosis E) Brucellosis