Which of the following statements concerning malignant melanoma is false?
a. It is the fastest growing (in number of incidents) form of skin cancer.
b. It is the most lethal form of skin cancer.
c. It is the third most common form of cancer in humans.
d. Its highest incidence is in light-skinned individuals.
e. It is caused by excessive exposure to UV irradiation.
C
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Competitive exclusion is a result of:
a. interspecific competition. b. intraspecific competition. c. character displacement. d. succession. e. community complexity
Fish populations can decline due to the introduction of ________ species.
A) invasive B) endemic C) native D) pandemic
Which of the following phenomena favors individuals with average phenotypes over those with extreme phenotypes?
A) Gene flow B) Genetic drift C) Sexual selection D) Stabilizing selection E) Coevolution
Which of the following is a function of a poly-A signal sequence?
A. It is a sequence that codes for the hydrolysis of the RNA polymerase. B. It adds a 7-methylguanosine cap to the 3' end of the mRNA. C. It codes for a sequence in eukaryotic transcripts that signals enzymatic cleavage ~10-35 nucleotides away. D. It allows the 3' end of the mRNA to attach to the ribosome. E. It adds the poly-A tail to the 3' end of the mRNA.