In humans, a deletion from chromosome 5 typically leads to severe mental retardation and a malformed larynx; this

disorder is known as ____.



a. Turner syndrome
b. Down syndrome
c. cri-du-chat
d. Triple-X syndrome
e. Klinefelter syndrome


ANSWER: c

Biology & Microbiology

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The highly toxic cyanide poison binds to the last

molecule in the electron transfer chain, halting additional electron transfer. What is the consequence? a. Oxygen can’t pick up electrons. b. No more water will be formed. c. No more ATP will be formed. d. The affected individual will not survive. e. All of these are a consequence.

Biology & Microbiology

Peptide hormones include

a. estrogens. b. growth hormone. c. melatonin. d. thyroid hormone. e. oxytocin.

Biology & Microbiology

If each nucleotide coded for a single amino acid, how many different types of amino acids could be

combined to form proteins? a. 4 b. 16 c. 20 d. 64 e. 0

Biology & Microbiology

For a given cross, the expected number of double recombinants is 20 and the observed number of double recombinants is 15. What is the interference calculation (I)?

A) 0.25 B) 1.33 C) 20 D) 0.75 E) 15

Biology & Microbiology