Which of the following statements about allopolyploidy is false?
a. It can result in a new, reproductively isolated species in just one generation.
b. Many flowering plant species are allopolyploids.
c. It accounts for a large portion of the remarkable species diversity observed on Earth today.
d. The hybrid may have a combination of traits conferring greater fitness than the parent
species.
e. The hybrid may assume a new role in the environment and so coexist with the parent
species.
C
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Describe the tradeoff that exists between energy and water requirements for the production of uric acid and urea
What will be an ideal response?
More than 50% of the entire human genome codes for functional proteins.
Answer the following statement true (T) or false (F)
Which of the following is true regarding the use of osmotic pressure as an antimicrobial agent?
A. Exposing organisms to the air on a benchtop so they completely dry out is an example of using osmotic pressure as a means of microbial control. B. Exposing a microbe to a hypertonic environment draws water out of the cell, causing plasmolysis. C. Salts and sugars external to a microbe create a hypotonic environment, which causes lysis of the cell. D. Salt is an effective solute to create an osmotic pressure gradient outside of a cell; however, the use of sugar, such as in jams and jellies, works via a different mechanism.
Short hairlike parts on the cell surface are called:
A. Cilia B. Pseudopod C. Flagella D. Spores