If the allele for brown eyes is dominant and the allele for blue eyes is recessive, which genotype produces a person with blue eyes?
a. A blue-eyed person is homozygous with two alleles for brown eyes.
b. A blue-eyed person is homozygous with two alleles for blue eyes.
c. A blue-eyed person is heterozygous with one allele for blue eyes and one allele for brown eyes.
d. The alleles for eye color are demonstrating codominance.
b
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A newborn baby's visual acuity is about:
a. 20/20 b. 20/40 c. 20/400 d. 20/800
One interesting study found that the heritability estimates for disordered eating were about 6% at age 11, but at age 14 the estimates for genetic contributions had increased to 46%. What is the best explanation for this finding?
A. The researchers made more accurate measurements at the 14-year-old time point. B. All eating disorders have a 3-year latency period that it takes them to fully develop. C. Factors associated with puberty - stress, hormones, and dieting - may be responsible. D. People with eating disorders dropped out of the study, biasing the results.
During a disaster, a doctor refuses to rest because she feels obliged to do all that she can to save more victims. Her efforts are motivated by
a. loss of inhibitory self-control. b. a mutually responsive orientation c. a conflict between time-out and self-oriented distress. d. felt responsibility.
_____ is the process of reactivating or reconstructing information from your memory store
A) Remembering B) Recall C) Retrieval D) Recognition