Restriction (enzymes/proteases/polymerases), first isolated from bacterial cells, cut DNA molecules at specific sites
What will be an ideal response?
enzymes
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A bacteriophage that can integrate its genome into the host chromosome and not cause lysis of the host cell is said to be ________.
A. moderate B. temperate C. virulent D. avirulent
Blue flower color (B allele) is dominant to white (b allele). If a population of plants in Hardy-Weinberg equilibrium contains white flowers (bb) at a frequency of 0.04, what is the frequency of the blue flower allele (B)?
A. 0.2 or 20% B. 0.64 or 64% C. 0.32 or 32% D. 0.8 or 80% E. 0.96 or 96%
How can only four nucleotides account for the extreme diversity of traits within living things?
a. The biochemical structure of nucleotides differs between cell types. b. The nucleotides can base pair with any other nucleotide. c. Nucleotides are arranged in many different sequences. d. Different proteins can be encoded from the same DNA sequence. e. Complex organisms have more than four types of nucleotides.
A normally harmless substance that produces an immune response in some people is a(n):
a. pathogen b. cytokine c. histamine d. allergen e. antibody