The grouping that would include the largest number of species is the
A. genus.
B. phylum.
C. domain.
D. order.
C. domain.
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The most common DNA-binding motif is the
A. non-helical zipper. B. leucine zipper. C. zinc finger. D. homeodomain. E. helix-turn-helix.
Complete the following sentence. An intron is _______________________
A. a protein that is clipped out post- translationally B. RNA that is removed during the processing of an RNA molecule and remains inside the nucleus C. part of an intact, mature mRNA that leaves the nucleus D. a transfer RNA that binds to the codon E. a series of amino acids at the end of a new polypeptide that directs transcription to the ER
Some primitive snakes, like the ball python (Python regius), have vestigial forelimbs
a. True b. False
Who are responsible for discovering the structure of DNA?
A. Francis Crick and James Watson B. Matthias Schleiden and Theodor Schwann C. Charles Darwin and Joseph Farman D. Anton van Leeuwenhoek and Theodor Schwann E. Theodor Schwann and Robert Hooke