Which of the following occurs in prophase?
a. sister chromatid attachment
b. the replication of DNA
c. chromosomes aligned in the middle of the
cell
d. breakdown of the nuclear envelope
e. separation of sister chromatids
D
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In the heart of a reptile or amphibian, where would you expect to find oxygenated blood? Select all correct choices
A. in the right atrium B. in the left atrium C. mixed with de-oxygenated blood in a common ventricle D. mixed with de-oxygenated blood in the right ventricle E. Nowhere; oxygenated blood does not travel through the heart of these animals.
A motor unit is
A. a motor neuron and all of the muscle fibers to which it connects. B. a sensory neuron and two muscle fibers. C. a motor neuron and a whole muscle. D. a sensory neuron and several sarcomeres. E. a motor neuron and several sarcomeres.
Large amounts of antibodies produced for commercial use are called
a. monoclonal antibodies. b. myeloma cells. c. interferons. d. clones. e. hybridoma cells.
What pattern of inheritance applies to a woman with type A blood who has the alleles IA and i?
A) polygenic inheritance B) simple dominance C) codominance D) sex-linked recessive inheritance