Which of the following is not a target for TC cells?
A. Human transplanted liver
B. Virus-infected cells
C. Pig transplanted heart
D. Cancer cells
E. Bacteria
Answer: E
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An animal with a diploid number of 36 chromosomes will have ____ chromosomes in its gametes and ____
chromosomes in its somatic cells. a. 18; 18 b. 18; 36 c. 36; 18 d. 36; 36 e. 36; 72
Which mechanism causes postzygotic reproductive isolation?
A. habitat isolation B. mechanical isolation C. hybrid sterility D. temporal isolation
Extracts of pathogenic bacteria can transform harmless bacteria to harmful bacteria unless ____ enzymes are added to the extract.
A. protein transfer B. mRNA-degrading C. tRNA-degrading D. DNA-degrading E. nucleic transfer
Which PCR step causes the denaturation of double-stranded DNA?
A. Add DNA polymerase and nucleotides at 72°C. B. Cool DNA to between 50°C and 65°C. C. Heat target DNA to 94°C. D. Add primers. E. Repeat the cycle of heating and cooling.