Diseases with long incubation periods are more likely to spread extensively
Indicate whether this statement is true or false.
TRUE
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Nematodes and rotifers have a body cavity that is
(a) called a coelom. (b) called a pseudocoelom. (c) completely lined by tissues derived from mesoderm. (d) both a and c.
Mitochondrial DNA (mtDNA) in humans
A. is always donated to the offspring from both parents. B. can be used to identify related people. C. can be isolated only from intact embryos. D. can be used to establish paternity.
Why might the cricket genome have eleven times as many base pairs as that of Drosophila melanogaster?
A) Crickets have higher gene density. B) Drosophila are more complex organisms. C) Crickets must have more noncoding DNA. D) Crickets must make many more proteins.
Shigellosis can be differentiated from salmonellosis by:
A) The presence of nonmotile noncoliforms B) The presence of bloody diarrhea C) The lack of fever D) The presence of nonmotile noncoliforms in bloody diarrhea E) Abdominal cramps and fever