Which offspring will receive a harmful allele for a sex-linked trait from a man who carries the allele?
A) all of his daughters
B) only half of his daughters
C) only half of his sons
D) all of his children
A
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One of the following drugs blocks cell division because it stabilizes the microtubules. What is this drug, and for what is it used?
A) vincristine; bacterial infections B) vinblastine; antimitotic therapy C) taxol; breast cancer D) nocodazole; allergies E) benzimidazole; colchicine
Which of the following is not a function of a plant's root system?
A. energy production B. anchoring the plant C. nutrient absorption. D. water absorption E. a site for beneficial relationships with fungi
Figure 8.4
What type of virus particle is illustrated in the figure?
A. Rhinovirus B. Adenovirus C. Bacteriophage D. HIV E. Rotavirus
While staining a mixed culture of Gram-positive and Gram-negative bacteria, switching the order of steps 2 and 3 would result in ______________________.
a. all bacteria appearing purple b. all bacteria appearing clear c. all bacteria appearing pink d. a change in the Gram reaction; Gram-negative cells would appear purple while Gram-positive cells would appear pink.