Which of the following statements is true?
a. Bacterial chromosomes are broken into individual segments containing one or more genes, which are then replicated.
b. The cell’s circular chromosome is unzipped and the strands separated before the replication process can begin.
c. The cell’s circular chromosome begins unzipping and replicating in one direction from the origin to the terminal.
d. Replication proceeds in both directions from the origin until both strands are complete chromosome loops.
d. Replication proceeds in both directions from the origin until both strands are complete chromosome loops.
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Identify negative feedback component D
a. integrator b. sensor c. stimulus d. response e. effector
Parental care of the young is usually associated with species with a Type ___ survivorship curve.
A. I B. II C. III D. I or II (depending on the sex ratio) E. I or III (depending on whether the reproductive strategy is iteroparous or semelparous)
Which skin disorder is caused by a type of herpes virus?
a. acne b. vitiligo c. cold sores d. malignant melanoma e. squamous cell carcinoma
In the early 1950s, James Watson and Francis Crick ____
a. were awarded the Nobel Prize for Medicine or Physiology b. combined all of their previous research in order to explain the structure of DNA c. began to work out the structure of DNA by organizing the information about DNA that was already available d. produced X-ray diffraction photographs from highly purified DNA samples e. isolated two strains of S. pneumoniae and used them to further research the structure of DNA