Which of the following is the most common type of alternative splicing in animals and involves making mRNA molecules that lack a complete exon?
A) intron retention
B) mutually exclusive exons
C) alternative splice site
D) alternative promoters
E) cassette exons
Answer: E
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Cnidarians have an outer layer derived from ectoderm, an inner layer from endoderm, and a ____
a. middle layer of mesoderm b. watery middle layer c. well-developed brain d. jellylike matrix in between e. complete gut
The accompanying figure shows that the rate of alarm calls made by black-tailed prairie dogs is dependent on a perceived threat by a predator. This behavior most closely approximates that predicted by ________
A) mutual benefit B) selfishness C) altruism D) spite
You would not have an autoimmune disease if you were suffering from
A. rheumatoid arthritis. B. lupus. C. Graves' disease. D. type I diabetes. E. polio.
Which component distributes water and nutrients throughout the plant body?
a. ground tissue
b. vascular tissue
c. dermal tissue
d. root
e. shoot