__________ is/are a major cause of the dramatic rise in multiple births in recent decades.
A) Prescription drug use during pregnancy
B) Low maternal weight gain
C) Young maternal age
D) Fertility drugs
Correct Answer:
Verified
Q29: Fragile X syndrome is
A)expressed only when it
Q30: Taylor's 23rd pair of chromosomes is XY.Taylor
A)is
Q31: Somatic mutation
A)increases with age.
B)decreases with age.
C)shows that
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Q33: The one allele that affects the child's
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Q36: Characteristics that vary on a continuum among
Q37: A zygote that separates into two clusters
Q38: Studies of mutation demonstrate that
A)some mutations occur
Q39: _ hair is dominant,while _ hair is
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