Which of the following, if discovered, could refute our current understanding of the pattern of evolution?
A) no fossils of soft-bodied animals
B) a modern bird having reptile-like scales on its legs
C) radioactive dating of rocks showing that rocks closer to the Earth's surface are younger than lower rock strata
D) diverse fossils of mammals in Precambrian rock
D
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Negative staining with India ink can be used to reveal the presence of capsules that surround bacterial cells.
Answer the following statement true (T) or false (F)
What is a membrane potential?
What will be an ideal response?
Which event may occur in all viruses, prokaryotes,
and eukaryotes? a. duplication b. aneuploidy c. translocation d. mutation e. none of these
Bacterial pathogens may be controlled by ________, which are viruses that specifically infect and lyse the bacterial host.
What will be an ideal response?