Which condition is NOT associated with chromosome 21?

a. sickle-cell anemia
b. Down syndrome
c. ALS
d. epilepsy
e. schizophrenia


ANSWER: a

Biology & Microbiology

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What will be an ideal response?

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When calculating the gross national product, economists consider whether an activity is environmentally harmful.

Answer the following statement true (T) or false (F)

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Normal white blood cells (called B cells) and cancerous B cells that cause leukemia both carry a unique surface protein

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