The genetic characteristics of recessive genes
a. tend to mask the characteristics of dominant genes.
b. are always expressed in the phenotype.
c. are usually codominant.
d. tend to be masked by the characteristics of dominant genes.
D
Psychology
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____________ amnesia refers to the loss of memory for events prior to the onset of an illness or the experience of a traumatic event
Answer:
Psychology
A researcher pairs a tone of 1200 Hz with an electric shock in a conditioning experiment. On some trials, he presents tones of 1000 Hz or 1500 Hz without the shock. The procedure he is using resembles the method used to bring about
a. blocking. b. trace conditioning. c. stimulus discrimination. d. stimulus generalization.
Psychology