A ________ is a piece of extrachromosomal DNA that has its own replication origin.
Fill in the blank(s) with the appropriate word(s).
plasmid
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Land plants are descended from ____
Fill in the blank with the appropriate word.
Cell cycle checkpoints ensure that complete genomes are transmitted to daughter cells. DNA damage checkpoints are found in all of the following phases except
a. M phase. b. G1 phase. c. G2 phase. d. S phase.
Which of the following types of reproductive barriers separates a pair of insect species that could interbreed but for the fact that one lives on goldenrod plants and the other on autumn daisies in the same general area?
A) temporal isolation B) habitat isolation C) behavioral isolation D) gametic isolation
Chronic granulomatous disease is a disorder of the (first/second/third) line of immune defense.
Fill in the blank(s) with the appropriate word(s).