Why is it that monozygotic twins share 100% of their genes?
a. Because they are the result of two sperm cells fertilizing the same egg, and thus that egg make sure to choose only the same genes from each of the sperm cells.
b. Because they are the result of one zygote that split in two, making a perfect replica of itself.
c. Because they are the result of two zygotes being formed at precisely the same time.
d. Because they are born at the same time, and thus have the same start to their phenotypical development.
Answer: B
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a. be thin, tense, excitable, and nervous. b. exhibit inactivity, sleepiness, slowness, obesity, and depression. c. have a powerful craving for the taste of salt. d. have enlarged arms, hands, feet, and facial bones.
Young people are less likely than older drivers to wear seat belts. In a serious automobile accident, occupants not wearing seat belts are ____
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Your friend's baby was sleeping through the night a couple of months earlier. Now she is waking up quite a bit at night. This is not only frustrating, but also concerning
She knew that you took a developmental course and wants to know if you have any ideas. What do you tell her? a. Her baby is probably teething. b. It sounds like night terrors. c. She might need to eat more frequently due to a growth spurt. d. Sometimes there are just no reasons.
Beatrice has a history of bipolar disorder but has been effectively treated with medication. Which of the following medications is Beatrice most likely to receive?
A) Fluoxetine B) Alamene C) Prozac D) Lithium