Studies of sex chromosome aneuploidy reveal that ____ necessary for survival.
A) the X chromosome is not
B) the Y chromosome is not
C) two copies of the X chromosome are
D) two copies of the Y chromosome are
E) at least one copy of both the X and the Y chromosome is
Correct Answer:
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Q4: Trisomy 21 is the only autosomal trisomy
Q5: Polyploidy is characterized by _.
A) the failure
Q6: One important difference between amniocentesis and chorionic
Q7: Leukemia is often associated with chromosomal translocations.
Q8: Chromosomes are usually studied and photographed while
Q10: The letters G,Q,R,and C,used to describe the
Q11: Spindle fibers attach to the _ of
Q12: Down syndrome can be caused by either
Q13: When constructing a karyotype,the chromosome images are
Q14: The risk for Down syndrome increases _.
A)
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