Missense mutations cause large deletions when they
A) alter a protein's shape and affect its function.
B) alter an intron splicing site so that an entire exon is deleted.
C) change a triplet codon that does not affect the reading frame.
D) invert a segment of a chromosome.
B) alter an intron splicing site so that an entire exon is deleted.
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Which of the following best defines autoimmunity?
a. Hypersensitivity to self-antigens b. Delayed immune system response c. Inherited immune system insufficiency d. Immunodeficiency present from birth
Which chemical, contained in the granules of basophils, helps prevent blood clot formation?
a. histamine b. leukotrienes c. prostaglandins d. heparin e. SRS-A
Why is the phrase "survival of the fittest" somewhat misleading?
A) It implies that the best possible organism will evolve. B) It implies that organisms will always grow bigger and more complex. C) It implies that there's random generation of variation. D) It implies that humans are the proper end result of evolution.
Which paired terms are incorrectly matched?
a. classical conditioning?extinction b. habituation?relevant stimuli c. imprinting?behavioral bonding d. insight?trial and error e. operant conditioning?reward