The reproductive system is the only system that contributes to homeostasis
1.True
2.False
2
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Why do normal nucleotides need to be included in the Sanger sequencing reaction mix?
a. so the DNA polymerase has a substrate to work with b. to enhance the action of the dideoxynucleotides c. so a longer sequence (up to 300 additional base pairs) can be determined than without (normally 200 bp). d. so multiple sequences of different lengths will be generated e. to prevent the DNA polymerase from making too many errors
Cloning a gene involves all of the following EXCEPT ________.
A. insertion of the gene into an appropriate vector B. isolating the fragment of DNA containing the desired gene C. introducing ligated DNA into E. coli cells D. expression of the vector and the gene in a cell-free environment
Currently, the influenza viruses used for manufacturing vaccines are grown in
a) Petri dishes. b) cell cultures. c) egg embryos. d) test-tube slants.
________ is a term that refers to similarities among various species that occur because the species are derived from a common ancestor.
A. Analogy B. Phylogeny C. Morphology D. Heterology E. Homology