An allele whose expression is completely masked by the expression or effect of its allelic partner is
a. homologous.
b. homozygous.
c. dominant.
d. recessive.
b
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A flagella stain was performed; no flagella were seen. Which of the following bacterium would be consistent with negative flagella stain result?
a. B. mallei b. B. vesicularis c. P. fluorescens d. R. pickettii
Which of the following has episomal DNA inserted in the cell's chromosome?
A) An F+ cell B) An F' plasmid C) An Hfr cell D) An F- cell E) All except D
Reverse transcriptase, the enzyme responsible for copying viral RNA into cDNA prior to integration into the host genome, lacks 3'-to-5' exonuclease "proofreading" ability. How is this advantageous to organisms that depend on such enzymes?
What will be an ideal response?
Scientists mostly agree that viruses are not technically living things. Defend this position based on what you know about what viruses are and how they work
What will be an ideal response?