Which of the following describes the gel electrophoresis technique?
a. Separating molecules based on their size and charge
b. Making multiple copies of DNA for further analysis
c. Creating multiple copies and expressions of genes
d. Modifying an organism’s DNA to achieve certain traits
a. Separating molecules based on their size and charge
Separating molecules based on their size and charge describes the gel electrophoresis technique.
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The secondary lymphoid organs consist of the following EXCEPT
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Which of the following is an application of the
first law of thermodynamics? a. The level of entropy increases as time passes. b. Living organisms represent an exception to the laws of energy. c. The quantity of energy does not increase or decrease in the universe. d. Fungi and plants do not make their own energy but derive it from somewhere else. e. The amount of energy found in the compounds on one side of an equation is equal to that on the other side
In primary culture all cells survive.
a. true b. false
Blood samples are taken from the heel of newborn babies to test for a mutation in the PKU gene, which, if left untreated and in severe cases, can lead to mental retardation, reduced skin pigmentation, and seizures. Which concept is being illustrated by
this example? A) incomplete dominance B) polygenic inheritance C) pleiotropy D) codominance