In a study of twins, a researcher finds that 40 percent of dizygotic (DZ) twins and 40 percent of monozygotic (MZ) twins share a trait. What is the researcher most likely to conclude about the trait?
A. It is 40 percent concordant.
B. It is 60 percent concordant.
C. It is genetically determined.
D. It is not genetically determined.
Answer: D
You might also like to view...
When Ivan Pavlov rang a bell until the dogs saw the food sitting in front of them, this was __________ conditioning
a. trace b. latent c. delayed d. backward
You and your family are anxiously awaiting the birth of your niece. You see one of the nurses and ask how things are going. She tells you that this might be a while because your sister is experiencing "failure to progress"
Your grandmother overhears the conversation and become very uneasy. What do you tell her? a. Not to worry—that simply means that labor is taking longer than they expected. b. That the fetus is probably going to be born breech. c. That the fetus is in "distress" and an emergency cesarean section will likely be performed. d. The cervix has not dilated at all.