Which of the following recruits proteins to form a kinetochore at the centromere?
A) kinesin
B) cytoplasmic dynein
C) CENP-A
D) cohesin
E) APC
Answer: C
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Acyclovir is used to treat infections caused by ________.
A. hepatitis C virus B. influenza A virus C. HIV D. herpes simplex virus E. respiratory syncytial virus
You apply the acid-fast stain method to a patient's specimen, an aspirate from the lungs. Microscopic examination reveals a large number of bright pink-red bacillus-shaped bacteria in the smear. Which statement is true?
A. This is the expected outcome for normal sputum. B. The patient has tuberculosis. C. The patient has pneumonia. D. The patient has an HIV infection.
Which letter in the accompanying figure represents the ovary in which haploid germ cells form by meiosis and gametes
form when these cells divide by mitosis? a. A only b. B only c. C only d. D only e. both A and D
Imagine a diploid sexually reproducing organism, Diploidus sexualis, that contains three pairs of chromosomes. This organism is unusual in that no recombination between homologous chromosomes occurs during meiosis
A. Assuming that the chromosomes are distributed independently during meiosis, how many different types of sperm or egg cells can a single individual of this species produce? B. What is the likelihood that two siblings of this species will be genetically identical? You can assume that the homologous chromosomes of each parent are different from one another and from their counterparts in the other parent.