From the list BELOW, which of the following is the most logical sequence of steps for splicing foreign DNA into a plasmid and inserting the plasmid into a bacterium?
1. Transform bacteria with recombinant DNA molecule
2. Cut the plasmid DNA using restriction enzymes
3. Extract plasmid DNA from bacterial cells
4. Hydrogen-bond the plasmid DNA to nonplasmid DNA fragments
5. Use ligase to seal plasmid DNA to nonplasmid DNA
A) 4, 5, 1, 2, 3
B) 3, 2, 4, 5, 1
C) 3, 4, 5, 1, 2
D) 2, 3, 5, 4, 1
E) 1, 2, 4, 3, 5
Ans: B) 3, 2, 4, 5, 1
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A) homozygous dominant. B) homozygous recessive. C) heterozygous dominant. D) heterozygous recessive.
In Figure 23-2, the taxon labeled II is:
a. monophyletic. b. paraphyletic. c. polyphyletic. d. a clade. e. an outgroup
A woman is found to have forty-seven chromosomes, including three X chromosomes. Which of the following describes her expected phenotype?
A) a female with masculine characteristics such as facial hair B) an apparent male who is sterile C) healthy female of slightly above-average height D) a sterile female
TORCH pathogens are all characterized by
A) transmission through sexual contact. B) transmission through sexual contact and the ability to cause intrauterine infections. C) the ability to cross the placenta to infect a developing fetus. D) the ability to cause intrauterine infections which are linked to infertility. E) transmission through sexual contact, the ability to cause intrauterine infections which are linked to infertility, and the ability to cross the placenta to infect a developing fetus.