Which of the following is NOT added to each of the 4 assay tubes when performing the dideoxy method for DNA sequencing?
A. many copies of target DNA
B. primers
C. DNA polymerase
D. one of the 4 deoxynucleotides (radiolabeled)
E. one of the 4 dideoxynucleotides
C. DNA polymerase
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A network of protein filaments called ____ lines and reinforces the inner surface of the nuclear envelope in animal
cells.
a. actins b. chromatins c. lamins d. tubulins e. lamellae
If allele 'a' is favored, or selected for, over allele 'A,'
A. 'A' will increase in frequency and 'a' will decrease in frequency. B. both alleles will increase in frequency. C. 'a' will increase in frequency and 'A' will decrease in frequency. D. the frequencies of both alleles will remain the same.
Answer the following questions true (T) or false (F)
1. A flea is considered to be a predator on a dog. 2. The number of prey species is one of several factors determining the number of predators that can live in an area. 3. Parasites usually kill their hosts.
Which of the following statements about tRNA is FALSE?
A. tRNAs are produced in the nucleus. B. tRNAs of both eukaryotes and prokaryotes share common features. C. tRNAs possess an anticodon complementary to the codon. D. Functional tRNAs have been spliced by spliceosomes. E. The two-dimensional structure of tRNAs exhibits a cloverleaf pattern.