Are all species introductions the fault of humans? What will be an ideal response?
No, species introductions can happen by a number of ways. Seeds can travel on migratory animals,
mature organisms can travel across bodies of water, and at a slower pace the continental drifts can
move species. That being said, humans have accelerated the pace of species introductions to an
alarming rate due to our ability to travel long distances very rapidly.
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Match the following items with the correct phrases.
_______1. In ____________________, bacteria acquire new genetic information in the form of viral genes. _______2. Oswald Avery and his colleagues discovered that DNA is the hereditary molecule while performing ____________________ experiments with Streptococcus pneumoniae. _______3. In ____________________, bacteria acquire new genetic information as a result of absorbing pieces of naked DNA from their environment. _______4. In ____________________, genetic information is passed from one bacterial cell to another via a hollow sex pilus. _______5. In ____________________, bacteria acquire new genetic information when bacteriophages inject bacterial genes. a. conjugation b. lysogenic conversion c. mutation d. transduction e. transformation
A population in Hardy-Weinberg equilibrium
a. consists of allele frequencies that are constantly changing. b. is under no selective pressures. c. consists of genotype frequencies that are constantly changing. d. is very common in nature. e. requires a small population size.
Which of the following hepatitis viruses is normally transmitted through contaminated drinking water?
A. A B. B C. C D. D E. G
Which number describes a Transmission Electron Microscope?
What will be an ideal response?