A gene is
a. a chain of DNA molecules. b. an egg or sperm cell.
c. the observed characteristics of a trait.
d. a portion of DNA that codes for the production of one protein.
Question 2
As children enter toddlerhood, they begin to imitate parental activities when they are alone. This is the beginning of which of the following?
a. Sensorimotor play b. Parallel play
c. Group play
d. Symbolic play