Sickle-cell anemia is caused by:
A) a chromosomal abnormality.
B) a single segment found only on the Y chromosome.
C) a recessive gene.
D) a decrease in estrogen levels.
Correct Answer:
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Q41: Which of the following statements is true
Q42: Down's syndrome is caused by:
A) alcohol abuse
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Q44: If an individual gets a recessive gene
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Q47: Each member of a pair of genes
Q48: According to a study in 2014 by
Q49: Individuals with Klinefelter syndrome produce:
A) less estrogen
Q55: Jill bears the genetic code for Von
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