What is one major limitation of two-dimensional gel electrophoresis (2DGE)?
A) 2DGE is useful only in separating eukaryotic gene products.
B) It is extremely costly to execute in a typical molecular biology laboratory.
C) Only the most abundant products are detected.
D) 2DGE can be run only on nucleic acids.
E) When products are separated, they tend to leach out of the gel matrix.
C
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Match the following items with the correct phrases.
_______1. _______________ are chemotrophs that use inorganic chemicals as their energy source. _______2. Organisms that use organic compounds as their source of carbon are called ____________________. _______3. Organisms that use organic compounds as their energy source are called ____________________. _______4. Organisms that use carbon dioxide as their source of carbon are called ____________________. _______5. Organisms that use light as their energy source are called ____________________. a. autotrophs b. heterotrophs c. lithotrophs d. organotrophs e. phototrophs
Researchers study the inheritance of particular human traits by ____
a. performing breeding experiments b. crossing individuals with different phenotypes c. analyzing genealogical pedigrees d. selectively breeding certain individuals e. using artificial selection techniques
Nucleic acids are long polymers of repeating subunits called ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following phrases describes a type of natural selection in which the mean characteristics of a population are preserved?
a) gemone selection b) artificial selection c) directional selection d) stabilizing selection e) disruptive selection