What two processes during the formation of sperm and eggs help explain genetic changes within a population?
What will be an ideal response?
Spontaneous genetic mutations and crossover of genetic material between members of a chromosome pair, which occur before the final cell division.
Psychology
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Most adolescents think about themselves
rarely. occasionally. periodically. frequently.
Psychology
The central nervous system is comprised of all the neurons in the ________ and the ________
a. brain; spinal cord b. muscles; terminal buttons c. brain; skeletal muscles d. glands; spinal cord e. axons; dendrites
Psychology