Cladistic analysis of populations of blue wildebeest in Africa has helped to show that habitat fragmentation has led to a loss of ____.
A. evolution
B. alleles
C. genes
D. gene flow
E. mutations
Answer: D
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Electron microscopy of metaphase chromosomes demonstrated various degrees of coiling. What was the name of the model that depicted this process?
A) double-stranded B) packing C) condensation D) chromatid folding E) folded-fiber
If one were to add a strong acid like HCl to an aqueous solution, which would result?
A. H+would be released into solution. B. The pH would increase. C. The pH would decrease. D. Both H+ would be released into solution and the pH would increase. E. Both H+ would be released into solution and the pH would decrease.
Which of the following three general mechanisms appear to be involved in the conversion of proto-oncogenes to oncogenes?
A) familial, sporadic, phosphorylation B) suppression, tabulation, projection C) inversions, translocations, methylation D) point mutations, translocations, overexpression E) transdetermination, mutation, allosteric interactions
Red blood cells crenate (SHRINK) in what type of solution
a. hypertonic b. hypotonic c. isotonic d. none of these