Groups of related but distinctly different genes that occur together in clusters are called
A. multigene families.
B. tandem clusters.
C. segmental duplications.
D. single-copy genes.
Answer: A
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A young woman decides to become a vegan and suddenly cuts out all animal products from her diet. She also makes the decision to no longer eat sugar. This will result in:
A. both more bacteroidetes and fewer firmicutes being present in her intestines. B. both more firmicutes and fewer bacteroidetes being present in her intestines. C. fewer bacteroidetes being present in her intestines. D. more firmicutes being present in her intestines. E. no change in the composition of her intestinal bacteria.
What accounts for the higher coral species diversity in the Pacific and Indian Oceans compared to the Atlantic?
What will be an ideal response?
Which of the following is the most direct measure by which ventilation is regulated?
1.carbon dioxide levels in the blood
2.acid levels in the cerebrospinal fluid
3.oxygen levels near the carotid bodies
4.oxygen levels near the aortic bodies
Which of the following is NOT involved in the formation of blood clots?
a. platelt congregation at the site of rupture of a blood vessel b. release of clotting factors from platelets c. production of fibrin, a protein d. formation of fibrin-red blood cell complexes that circulate in the blood and are too large to move though ruptured blood vessel walls