Most hospitals in the United States routinely test all newborns for ____, an autosomal recessive disorder in which a

metabolic abnormality causes a buildup of compounds that damage brain tissue and can lead to mental retardation unless a
restricted diet is followed



a. Duchenne muscular dystrophy
b. phenylketonuria
c. achondroplasia
d. sickle-cell anemia
e. cystic fibrosis


ANSWER: b

Biology & Microbiology

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The inheritance of leaf pigmentation in the four-o'clock plant Mirabilis jalapa is an example of ____

A. maternal effect B. maternal inheritance C. epigenetic inheritance D. imprinting

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In which of the following cases would DNA

profiling be used?

a. to reconstruct population dispersals b. to identify the remains of dead people c. to solve crimes d. to trace ethnic hertiages e. to do all of these

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People who exercise regularly have less mitochondria than couch potatoes.

a. true b. false

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The calcium that triggers muscle contraction is stored in the

A) motor neuron. B) plasma membrane of cells. C) endoplasmic reticulum. D) mitochondria.

Biology & Microbiology