When scientists use a radioactive or fluorescent probe to label target DNA fragments and then transfer the hybridized fragments to a nylon membrane, what is this process called?
a. Southern blotting
b. Northern blotting
c. gel electrophoresis
d. molecular cloning
a. Southern blotting
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Srb and Horowitz’s research led to the ____ hypothesis, which has since been modified to the ____ hypothesis
a. one gene-one enzyme; one gene-one polypeptide b. one gene-one polypeptide; one gene-one enzyme c. one gene-one protein; one gene-one enzyme d. one gene-one polypeptide; one gene-one protein
e. one gene-one enzyme; one gene-one proteinThe direct result of natural selection is a new species
Indicate whether the statement is true or false.
Cloning of an entire organism is known as ________
A) gene cloning B) genomics C) regenerative medicine D) reproductive cloning E) rherapeutic cloning
Organisms that require high salt concentrations for growth are called
A. thermophiles. B. obligate halophiles. C. acidophiles. D. anaerobes.