Multiple Choice
The reason that missing chromosomes and extra sex chromosomes do NOT cause more harm than they do is best explained by the
A) inactivation of any X beyond the first as a Barr body.
B) presence of genes on the Y chromosome that determine maleness.
C) presence of genes on the X chromosomes that determine femaleness.
D) loss of a sex chromosome in normal cells as embryo development occurs.
E) a higher level of gene-repair enzyme activity on sex chromosomes.
Correct Answer:
Verified
Correct Answer:
Verified
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