By 10 Months of Age, Alan Has a Vocabulary of a Dozen

question 31

Multiple Choice

By 10 months of age, Alan has a vocabulary of a dozen words. B. F. Skinner would have attributed Alan's rapid speech development mainly to _____.

• A) his unusually high I.Q.
• B) an unusual language-acquisition talent
• C) the amount his parents talk to him
• D) rapid physical development

---

Definitions:

Genetic Material

The molecules responsible for heredity and variation of organisms, primarily DNA or RNA in viruses.

Homologous Chromosomes

Pairs of chromosomes in a diploid organism that are similar in shape, size, and gene content, one inherited from each parent.

Chromosome Number

The total count of chromosomes in a cell, which is characteristic of each species.

Meiosis

Meiosis is a type of cell division resulting in four daughter cells each with half the number of chromosomes of the parent cell, essential for sexual reproduction.