After infecting the cell, HBV's gapped DNA is released into the nucleus where host ________ enzymes fill the gap and seal the nick, yielding a covalently closed, circular DNA.
Fill in the blank(s) with the appropriate word(s).
repair
Repair
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Which of the following is the main component of the plasma membrane?
a. cholesterol b. phospholipids c. proteins d. carbohydrates
Full induction of the lactose operon requires
A. lactose present. B. lactose and glucose present. C. lactose and arabinose present. D. lactose present without glucose.
In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color
The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a dwarf plant with white flowers produces 1/2 tall with purple flowers and 1/2 tall with white flowers. What is the genotype of the parents? What will be an ideal response?
If a cell containing 18 chromosomes divides by meiosis, how many chromosomes will each daughter cell have?
a. 2 b. 9 c. 18 d. 26