Functionally important gene sequences such as those encoding ribosomal RNA are

A. highly mutated sequences.
B. transposable sequences.
C. moderately repetitive sequences.
D. highly repetitive sequences.


Answer: C

Biology & Microbiology

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The percentage of different colored water boatmen eaten by fish were graphed relative to the frequency of that color in the population.  Based on the graph, a population of water boatmen would ________

A. lose rare genotypes. B. increase in size. C. increase in rare genotypes. D. have no variation in genotype frequencies. E. decrease in genetic variability.

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Persea americana is the binomial for Avocado that is included in Lauraceae. Pick the species name only for this plant.

Persea americana Avocado Lauraceae

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Which of the following is a property of water?

A) it has a high capacity for heat. B) it is not a common reactant in metabolic reactions. C) It is not a good solvent. D) it is liquid in a very narrow temperature range. E) it is a nonpolar molecule.

Biology & Microbiology