What do you predict would be the effect of an inversion of the ?-globin gene cluster with respect to the LCR?
A) No globin genes will be expressed and the fetus will die in utero.
B) ?-globin will be expressed first during development.
C) The order of globin gene expression will be reversed; the effect on the fetus cannot be predicted.
D) The individual will develop sickle-cell disease in adult life.
C) The order of globin gene expression will be reversed; the effect on the fetus cannot be predicted.
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Would a denatured antigen be expected to have the same epitopes as its native (non-denatured) counterpart? Why?
A. Yes-epitopes are just a sequence of amino acids in a row, so they do not change regardless of 3D shape of the protein molecule they lie within. B. No-ALL epitopes are dependent on being in the proper original 3D conformation in the protein they arise within. Denaturing them would destroy them by destroying that conformation. C. Yes AND No-SOME epitopes are dependent on 3D conformation (conformational epitopes), while some simply depend on the sequence of amino acids (linear epitopes). So, really, it depends on the particular epitope.
In experiment 1, you will test multiple food sources to find the one that causes the most weight gain (the "winner"). In experiment 2, you will test the "winner" three times. Why do you have to repeat the experiment three times? Choose ALL that apply.
What will be an ideal response?
Coyote populations are lower where wolf populations are increasing because
A) wolves directly compete with coyotes. B) wolves are a primary predator on coyotes. C) wolves can withstand colder temperatures than coyotes. D) wolves facilitate coyote populations by leaving scavenged meat.
An atom that has an electrical charge is called a(n)
a. molecule. b. isotope. c. ion. d. proton. e. element.