Synaptic pruning involves
A) trimming of glial cells.
B) loss of unused synapses.
C) growth of the myelin sheath.
D) loss of glial cells.
B) loss of unused synapses. Synaptic pruning is the process in which unused synapses are lost.
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Davina attends school regularly and has made great strides in her understanding of material in her science classes. Being able to reason more like a mature adult, Davina is in which of Piaget's developmental stages?
a. Formal operational b. Concrete operational c. Sensorimotor d. Preoperational
A human trait is influenced by a single pair of genes, with "T" representing the dominant gene and "t" representing the recessive gene. Joe (genotype Tt) and Meg (genotype Tt) decide to have children. According to the principles of Mendelian heredity, what percentage of their children would exhibit the trait?
a. 25 b. 50 c. 75 d. 100