Adaptive zones opened up for the dinosaurs after
a. early dinosaurs evolved a four-chambered heart.
b. large fragments from an asteroid or comet hit
multiple locations on Earth.
c. volcanic eruptions and global climate change
during the Cretaceous.
d. reptiles became very large in size.
e. all of these occurred.
Answer: b
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In forensics, the laws in the United States and elsewhere allow the establishment of databases of PCR amplification of short tandem repeats (STRs) of the Y chromosome
Which of these statements would provide an appropriate basis for making such databases divided by ethnicity? A) Different heritage groups have different levels of such polymorphisms. B) It would be easier to evaluate suspects of different ethnicities. C) It would show detectives which ethnic category they should be looking for. D) Most crimes of certain types are found among certain groups. E) Y polymorphisms increase with the probability of criminal behavior.
Which type of media is used to determine the species of staphylococcus in an isolate?
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Sharks have a number of fleshy gill slits instead of a bony gill cover. How does this affect their behavior?
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