Select the option that best completes the following statement: Nonhomologous endjoining is a process by which a double-stranded DNA end is joined ___________________
(a) to a similar stretch of sequence on the complementary chromosome.
(b) after repairing any mismatches.
(c) to the nearest available double-stranded DNA end.
(d) after filling in any lost nucleotides, helping to maintain the integrity of the DNA sequence.
(c)
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Lysogeny is essential for the virulence of many pathogenic bacterial strains
Indicate whether the statement is true or false.
The domination of the flowering plants over
the past 100 million years appear to be their coevolution with
a. dinosaurs. b. gymnosperms. c. insects. d. mammals. e. humans
Which of the following statements is correct about passive diffusion?
A) It requires an expenditure of energy by the cell. B) It is a process in which molecules move from a region of higher concentration to a region of lower concentration (or down a concentration gradient). C) It is a process in which molecules move from a region of lower concentration to one of higher concentration (or up a concentration gradient). D) It may require a transport protein. E) It involves movement of molecules down a concentration gradient and may require a transport protein.
Female gametophytes develop specifically within what part of the flower?
A. anther B. central cell C. stamen D. ovule E. stigma