One of the principal capsid shapes is a 20-sided figure with 12 evenly spaced corners referred to as a(n) _____ capsid.

Fill in the blank(s) with the appropriate word(s).


Icosahedral

Biology & Microbiology

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What type of procedure is appropriate to isolate revertants from a population of threonine auxotrophic cells? 

A. Grow the auxotrophic cells on and agar plate with threonine; any colonies that form are presumed revertant. B. Grow the auxotrophic cells on an agar plate without threonine; any colonies that form are presumed revertant. C. Threonine auxotrophic revertants could not be isolated on any type of media. D. Grow the auxotrophic cells in broth with threonine; if the broth becomes cloudy, revertants are presumed present.

Biology & Microbiology

The bicoid gene has what pattern of inheritance?

A. sex-linked B. incomplete penetrance C. maternal inheritance D. autosomal

Biology & Microbiology

Provide a brief definition for positive interference

What will be an ideal response?

Biology & Microbiology

Which of the following particles could diffuse easily through a cell membrane?

a. Oxygen b. Sodium ion c. Hydrogen ion d. Glucose

Biology & Microbiology