Which of the following best describes the relationship between genetic variation and relatedness?
A. Though parents' chromosomes can combine in millions of ways, siblings still share half their alleles with one another.
B. Genetic variation ensures that the general population has differing genotypes, but siblings have similar genotypes.
C. Genetic variation does not occur among related individuals.
D. Though siblings are related, due to genetic variation they may share different numbers of alleles.
Answer: A
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Dr. Chin told his students, "Incidence rates tell us the percentage of individuals in a targeted population who have a particular disorder during a specified period of time, while prevalence rates describe the number of new cases within a specified period. Shorter periods of time generally reveal higher prevalence rates. Moreover, incidence rates are likely to be lower than prevalence rates."
Which part of Dr. Chin's statement is accurate? a. Incidence rates tell us the percentage of individuals in a targeted population who have a particular disorder during a specific period of time. b. Prevalence rates describe the number of new cases within a specified period. c. Shorter periods of time generally reveal higher prevalence rates. d. Incidence rates are likely to be lower than prevalence rates.
Ganis and coworkers used fMRI to measure brain activation for perception and imagery of objects. Their results showed that
a. there is no difference between the activation caused by perception and by imagery. b. perception and imagery activate the same areas near the back of the brain, but imagery activates more of the frontal lobe than does perception. c. perception and imagery activate the same areas of the frontal lobe, but imagery activates more of the back of the brain than perception does. d. perception and imagery activate the same areas of the frontal lobe, but perception activates more of the back of the brain than imagery does.
Answer the following statements true (T) or false (F)
1. If a zygote has at least one X chromosome, then it will develop into a female. 2. The heart first begins to beat in the embryonic stage of prenatal development. 3. The fetal stage is the longest stage of prenatal development. 4. The most common teratogen is alcohol. 5. Fetal alcohol syndrome is associated with distinctive facial features but is not associated with cognitive deficits.
"I seek to understand the principles whereby a person's ability to think, speak, perceive, and learn changes as they go through the life span.". This statement would most likely be made by a __________ psychologist
a. physiological b. social c. developmental d. sensory and perceptual