Which of the following observations are expected if an infectious disease were a contributor to amphibian decline?
a. Amphibian decline occurs simultaneously at many points throughout the entire range of am-phibian populations.
b. Amphibian decline correlates with habitat alteration.
c. Individuals from nondecline populations that are transplanted into in-decline populations show the same symptoms as in-decline individuals.
d. Symptoms of in-decline individuals can be cured by medication in the lab.
e. C and D.
E
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The two strands of a DNA molecule contain nitrogen bases which are
A. identical. B. parallel. C. complementary. D. proportionate. E. random.
Repeated sequences within eukaryotic genomes may be represented as long repeated sequences next to each other, and are called ___________ repeats
Repeated sequences in eukaryotic genomes can also be located throughout the genome, and are called _______________ repeats. A. tandem; dispersed B. dispersed; tandem C. overlapping; adjacent D. adjacent; overlapping E. None of the answer options is correct.
The Hardy-Weinberg formula is used to calculate changes in ____
a. population sizec b. speciation c. allele frequencies d. mutation e. dimorphism
How does phytochrome control flowering?
A) by disrupting the plant's photoperiod B) by detecting differences in temperature in the spring C) by sensing sunrise and sunset D) by inducing differentiation of cells in the apical meristem