During meiosis, at times chromosomes sometimes fail to divide properly, and as a result, the person may have 45 or 47 chromosomes. Which of the following best describes this phenomenon?
a. chromosomal disorders
b. genetic misprinting
c. mitosis error
d. gene displacement
Answer: A
Psychology
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Which of the following is an example of the fetus' active participation in its own development?
a. fetal alcohol syndrome b. hormonal influence on development of sex organs c. placental defense against toxins and infections d. cephalocaudal development
Psychology
The zone of proximal development was an influential idea provided by ______?
Pavlov Vygotsky Piaget Skinner
Psychology