Most genetic diseases are rare because
A) each person is unlikely to be a carrier for harmful alleles.
B) genetic diseases are usually sex-linked and so uncommon in females.
C) genetic diseases are always dominant.
D) two parents probably do not carry the same recessive alleles.
E) mutation rates in humans are low.
Correct Answer:
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Q4: Newborn genetic screening for PKU
A) is very
Q5: Mutations of the gene for
Q6: Mutational "hot spots" in human DNA
A) always
Q7: Phenylketonuria is an example of a genetic
Q8: The type of mutation that involves the
Q10: Genetic diagnosis by DNA testing
A) detects only
Q11: In fragile-X syndrome,
A) females are affected more
Q12: In sickle-cell disease, one amino acid is
Q13: Which of the following is not a
Q14: People with sickle-cell disease have _ abnormality.
A)
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