Why might the cricket genome have eleven times as many base pairs as that of Drosophila melanogaster?
A) Crickets have higher gene density.
B) Drosophila are more complex organisms.
C) Crickets must have more noncoding DNA.
D) Crickets must make many more proteins.
C
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Which structural motifs found in transcriptional regulatory proteins is thought to interact with DNA only through the minor groove?
A. homeodomain B. leucine zipper C. ?-barrel D. helix-turn-helix
The process of fermentation requires oxygen
1.True 2.False
Which gland is associated with biological clocks or biorhythms?
a. pineal b. parathyroid c. hypothalamus d. pituitary e. thymus
The Great Dane and the Chihuahua are both domestic dogs (the same species), but mating between them is limited because of
A) hybrid infertility. B) hybrid inviability. C) geographic isolation. D) mechanical incompatibility. E) behavioral isolation.