Which of the following is the BEST example of canalization?
A) Jon and Jerry, MZ twins reared in highly different environments, have different
temperaments as adults.
B) Keith, an XYY male, is tall for his age, of average intelligence, and currently having
behavioral problems in school.
C) Terry and May, who both have brown eyes, are the biological parents of Jessica, who has
brilliant blue eyes.
D) Regardless of when they are born, all human infants smile at exactly forty weeks after
their conception.
D
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People who are physically attractive tend to receive more help than people who aren't ____
a. if they are female (but not if they are male) b. if the helper is male (but not if the helper is female) c. if they are female and the helper is male OR if they are male and the helper is female (but not otherwise) d. regardless of whether they are male or female, and regardless of whether the helper is male or female
Sharon is in the fourth week of her pregnancy. At which stage of prenatal development is her offspring?
a. conception b. fetal c. germinal d. amniotic e. embryonic
The onset of the menstrual cycle is called
a. amenorrhea. b. anorexia. c. menarche. d. menopause.
Why is it difficult for researchers to discover what percentage of the population is homosexual?
a) Because most people are unwilling to talk about their sexual orientation openly or will often lie on surveys. b) Because some people change orientation several times during their lifetime. c) Because surveys are inconsistent. Some include only homosexual behaviors, others include people who have had same sex desires. d) It isn't. It is well established that 5% of the population is homosexual.