Thymine dimers
A. involve mutations in purines.
B. involve adjacent nucleotides in the DNA.
C. result from exposure to chemicals.
D. do not alter the structure of DNA.
E. are formed by exposure to hydroxyurea
B
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For a complex trait that is observed less frequently in a given sex in a given family, the recurrence risk for this trait is
____________________ for future children of that sex.Fill in the blank(s) with the appropriate word(s).
Which genetic disorder is associated with a defect in the elastic connective tissue protein called fibrillin?
What will be an ideal response?
Two roller derby players trip each other and fall. One of them breaks a cartilage in her knee, while the other skater breaks a bone in her foot. Which one of them will take longer to heal? Explain your answer
What will be an ideal response?
Full induction of the lactose operon requires
A. that lactose and arabinose both be present. B. that lactose and glucose both be present. C. that lactose be present without glucose. D. that lactose be present. E. All of these choices induce the lactose operon.