Where does DNA replication occur?
A. Ribosomes
B. Rough ER
C. Nucleus
D. Golgi
Answer: C. Nucleus
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Suppose that in studies of genes on the same chromosome you find the following recombination
frequencies: ©2014 Brooks/Cole, Cengage Learning Why do the distances between a-c and c-b not add up to the distance between a-b?
a. a and b are not linked b. the distances were calculated incorrectly c. b is in between the a and c genes d. double crossovers between a-b decrease recombinants e. all three genes encode the same trait
DNA repair enzymes typically find mismatched base pairs by scanning for ____
a. missing hydrogen bonds b. unsealed nicks in the DNA strands c. Okazaki fragments d. extra hydrogen bonds e. distortions in the DNA double helix
The portion of a mycorrhizal fungus that penetrates the cell walls of the root cortex is called an
arbuscule. ____________________ Indicate whether the statement is true or false.
Which hormone promotes cell division and delays senescence in plants?
a. abscisic acid b. auxin c. cytokinin d. ethylene e. gibberellin