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According to the text, what percentage of variation of intelligence is estimated to be the result of genetics?
If an individual has schizophrenia, what is the probability that his dizygotic twin brother will also have schizophrenia?
Which of the following subjects would be best for a research study that examines the concordance rate of intelligence?
identical twins to fraternal twins
Which of the following individuals illustrates a person who is closer to the lower portion of their reaction range?
Nathan, who was born with a potential IQ of 145 (gifted IQ), was raised in an educationally deprived environment, and is an unmotivated learner.
Scarr and McCartney proposed the theory of genotype → environment effects. From their theory, which subtype occurs when people seek out environments that correspond to their genotypic characteristics?
Active genotype → environment effects
If one proposes the heritability of IQ is .80, which of the following statements is correct?
A large portion of IQ is determined by genetics.
If temperament was genetically based, which of the following would have the greatest degree of similarity?
Kendra is a professional singer who is the daughter of musical artists. Throughout her childhood, her parents encouraged and trained her to the best of their abilities. During school she enrolled in a specialized academy that continued to nurture her talent. Which of the following best describes Kendra's genotype?
Kendra's musical genes
Jack's father was an All-American in the 50M backstroke and qualified for the Olympic Team. Jack is a freshman in high school and does not think that he will need to train to become a member of the school's swim team. Jack keeps telling you that his father was a great swimmer, so he will also be a great swimmer. What do you think?
Jack might have the genotype for swimming, but he will need to train to become a great swimmer.
Keith and Carrie have been discussing how long they should wait to have children. At what age, statistically speaking, will Carrie run out of fertile ova?
Assume you have very close friends who are trying to get pregnant. To improve their odds you advise them that they should have intercourse when she is closer to ovulation and tell them that women generally ovulate ____ days into their menstrual cycles.
According to the text, what are the only cells in the human body that do not contain 46 chromosomes?
If Frank has schizophrenia, how likely is it that his identical twin brother will also have schizophrenia?
Grant is 7 years old and has ambitions of becoming a professional basketball player. His father is 5' 7" tall and his mother is 5' 3" tall. It is quite likely that Grant will be 5' 7" tall or a little taller, but not of NBA height. Grant's genetic potential is known as _
Reaction range proposes ____ establish(es) boundaries, and ____ determines where a person falls within that range.
To improve the odds of fertilization occurring, intercourse should occur _
within two days before and on the day of ovulation
A person's ___ is/are their characteristics; whereas, a person's ____ is/are their genetic makeup.
For women who are pregnant, heavy lifting, strenuous physical exertion, and continuous standing can raise the risk of
miscarriages, preterm birth, and stillbirth
provides a protective environment in which the fetus' temperature is regulated and protects the fetus from friction caused by the mother's movements.
Low iodine intake during pregnancy increases the risks of miscarriage, stillbirth, and abnormalities in fetal brain development. Since the 1920s, the United States has required table salt to have iodine, which is a similar practice to many countries that have economic wealth and resources. In what country is the lack of iodine most likely still an issue for pregnant women?
Cambodia, which is a developing country.
Your sister is pregnant. She has always been health-conscious and exercises regularly. She is planning on engaging in aerobic exercise by continuing to go to her exercise classes. What would be your advice to her? She should
exercise regularly as she will increase her ability to process oxygen
Samantha has always been a very active person and exercises regularly. During pregnancy she was concerned that maybe she was doing too much and it could be harmful for the fetus. Her physician told her that her exercise routine, which consisted of meditation, active stretching, yoga, and aerobic exercise, was fine. He even suggested that one of the activities positively stimulated her circulatory and muscular systems. According to the text, which of the following is Samantha's physician referring to?
As compared to developed countries, ____ percent of maternal and infant deaths occur in developing countries.
There is a rumor that pregnant women should dramatically increase their caloric intake and "eat for two"; however, it is known that pregnant women need about ____ more calories than those who are not pregnant.
According to the text, when a pregnant mother becomes highly stressed a fetus may
develop a faster heart rate and move more frequently
By the 8th day after conception, the fertilized egg has approximately 100 cells and is known as the
During the embryonic period, the ectoderm develops to become
skin, hair, nails, sensory organs, and nervous system
Which of the following enhances the health of a pregnant woman and the fetus?
Mild to moderate exercise
Aerobic exercise is important to pregnant women because it helps to
increase the woman's ability to process oxygen
The embryonic disk forms from the _____ of the blastocyst and develops to become the embryo.
Your niece is pregnant. She has heard that Kegel exercises are a good idea, but does not know how to perform them. Having a very close relationship, you would tell her to tense the
muscles of the vagina and anus repeatedly for 10-second intervals
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