Multiple Choice
Higher concordance for monozygotic twins compared with that for dizygotic twins indicates that genetic factors play a role in determining differences in a trait. Low concordance for monozygotic twins indicates that environmental factors play a significant role.
-A trait exhibits 100% concordance for both monozygotic and dizygotic twins. What conclusion can you draw about the role of genetic factors in determining differences in the trait?
A) Genetic factors are extremely important.
B) Genetic factors are somewhat important.
C) Genetic factors are unimportant.
D) Both genetic and environmental factors are important.
Correct Answer:
Verified
Correct Answer:
Verified
Q1: Genetic testing is used to screen newborns
Q2: Y-linked traits appear only in males and
Q3: Autosomal dominant traits appear in both sexes
Q4: Autosomal recessive traits appear with equal frequency
Q6: Rare X-linked recessive traits appear more often
Q7: X-linked dominant traits affect both males and
Q8: Similarities between adopted persons and their genetically
Q9: Dizygotic twins develop from two eggs fertilized