Which statement about the macronucleus and the micronucleus of ciliates is correct?
A. The macronucleus is diploid and the micronucleus is haploid.
B. The macronucleus forms by the fusion of micronuclei from two different mating types.
C. The micronucleus is formed by fission of the macronucleus.
D. The micronucleus transmits genetic information through mitosis and meiosis, while the macronucleus maintains routine cellular functions.
Answer: D
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Fill in the blank(s) with the appropriate word(s).
A fisherman who cut himself on a fishing hook later develops a cutaneous disease at the inoculation site. The exudate is aspirated and set up on a routine AFB medium for culture. It is incubated at 37°C, but no growth is observed after 8 weeks; however, a slide of the exudate was AFB-positive. Which one of the following statements explains these findings?
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Describe the steps in the polymerase chain reaction (PCR). What will be an ideal response?
In the Rh disease,
a. the mother must be positive and her first and second children positive. b. the mother must be negative and her first and second children positive. c. the mother must be negative and her first and second children negative. d. the mother must be positive and her first and second children negative. e. the mother and the father must both be negative and the child positive.