Recombinant DNA is ____
a. DNA encoding restriction endonucleases
b. a gene of interest found in the genome
c. DNA fragments from the same organism that have been joined together to form a single molecule
d. DNA fragments from two or more different sources that have been joined together to form a single molecule
e. a plasmid containing DNA from a single source
ANSWER: d
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Which components of speciation would be least likely to be part of punctuated equilibrium?
a. ongoing gene flow among all individuals b. a division of populations b. a change in environmental conditions d. a large number of mutations taking place at once
The initial size of a population _____________ affect the carrying capacity of the environment
a. does not b. does
The ________ zone includes more than 80% of the benthic environment.
Fill in the blank(s) with the appropriate word(s).
In animal cells, hydrolytic enzymes are packaged to prevent general destruction of cellular components. Which of the following organelles functions in this compartmentalization?
a. chloroplast b. lysosome c. central vacuole d. peroxisome e. glyoxysome