Using the table, into which group would you classify a virus with single-stranded DNA capable of converting to double-stranded before transcription takes place?
a. Group VI
b. Group III
c. Group II
d. Group V
c. Group II
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How does DNA structure relate to its function?
A) The three-dimensional structure allows DNA to catalyze chemical reactions. B) The order of nucleotides in a DNA strand specifies the order of amino acids in a protein. C) DNA folds in a variety of shapes, each with a unique function. D) The three-dimensional shape of DNA is critical for the storage of genetic information.
Four of the five choices listed below describe the
heterozygous condition. Select the exception. a. homozygous b. carrier c. heterozygotes d. hybrid e. Aa
Dogs (Canis lupus familiaris) and gray wolves (Canis lupus) can interbreed to produce viable, fertile offspring
These species shared a common ancestor recently (in geologic time) and have a high degree of genetic similarity, although their anatomies vary widely. Judging from this evidence, which two species concepts are most likely to place dogs and wolves together into a single species? A) ecological and morphological B) ecological and phylogenetic C) biological and morphological D) biological and phylogenetic
You are studying a cell structure that is approximately 100 nm in size. Which of the following provides the greatest magnification you can use to see this structure?
A) brightfield microscope B) darkfield microscope C) transmission electron microscope D) phase-contrast microscope E) scanning electron microscope