Which of the following tracts is essential for maintaining posture?

Which of the following students provides the best definition of the term "inference," in connection with the discussion of semantic memory in Chapter 8?

a. Don: "An inference refers to those conclusions and logical implications that people make, even when they were never directly stated in the original stimulus." b. Javier: "An inference is the grammatical structure of a sentence, in both written and spoken language." c. Polina: "An inference occurs when one speaker stops talking, and another begins to speak." d. Lindsey: "An inference is basically an alternate term for the word validity."

A man with one gene for red-green color deficiency will show the condition, but a woman shows the condition only if she has two genes for it. The reason is that the color deficiency gene is which of the following?

a. Recessive and sex-linked b. Dominant and sex-linked c. Recessive and sex-limited d. Dominant and sex-limited