In cocker spaniels, black coat color (B) is dominant over red (b), and solid color (S) is dominant over
spotted (s). If two dihybrids (Bb Ss) were crossed, which would be produced?
a. black and spotted pure-breeding forms
b. black and solid pure-breeding forms
c. red and solid pure-breeding forms
d. red and spotted pure-breeding forms
e. all of these
E
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The rigid layer that is present in the cell walls of Bacteria that is primarily responsible for the strength of the wall is known as
A) pseudomurein. B) S-layer. C) cellulose. D) peptidoglycan.
What key words does the question contain and what do they mean?
What will be an ideal response?
If oxygen is present during low-LET radiation the effect of radiation is?
a) reduced b) minimal c) maximal d) the same
The time from when pathogen first enters the body and begins to multiply, until symptoms first appear is the
A. incubation period. B. convalescent stage. C. prodromal stage. D. period of invasion. E. All of these choices are correct.