Women between the ages of 45 and 49 are about _____ as likely to have a baby with Down syndrome as a mother under age 30.
A) twice
B) ten times
C) seventy times
D) two hundred and fifty times
Correct Answer:
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Q58: In 1957, it was discovered that _
Q59: Which of the following sets of symptoms
Q60: Structural defects in the chromosomes
A) often occur
Q61: Which of the following genetic diseases is
Q62: Individuals with Down syndrome
A) have an extra
Q64: Which of the following sets of symptoms
Q65: Cri du chat syndrome results from the
A)
Q66: Which of the following sets of symptoms
Q67: Fragile X syndrome results from the
A) deletion
Q68: Which of the following is a sex
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