Between 6 and 10 weeks, the parent's communication with the infant evokes

If an offspring receives a recessive allele for a single-gene trait from both biological parents, the trait will develop in that offspring.

a. true b. false

Eight-month-old Eva cried when her new babysitter approached her. Eva's Mom knew that she was displaying _____, which peaks around _____ of age

Fill in the blank with correct word