Which of the following is a transfer of genes between nonhomologous chromosomes?
a. crossing over
b. aneuploidy
c. trisomy
d. translocation
e. duplication
D
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Select all of the following that are characteristics of chordates.
_____ notochord. _____ protostome development. _____ dorsal hollow nerve cord. _____ post anal tail. _____ pharyngeal slits.
Which blood type lacks the sugar found on the surface of red blood cells in other blood types?
A) type A B) type B C) type AB D) type O
During enzyme-linked reception, signal molecules bind to two tyrosine kinase receptors. The receptor proteins move
closer together in the plasma membrane and pair, forming a(n) ____. a. gate b. dimer c. pathway d. polypeptide chain e. protein kinase cascade
Which one of the following diseases is not correctly matched to its reservoir?
a. influenza— animal b. rabies—animal c. botulism—nonliving d. anthrax—nonliving e. toxoplasmosis—cats