Which of the following can produce linkage disequilibrium?
A) genetic drift
B) selection on genotypes of more than one locus
C) mixing two disparate populations, each of which is in linkage equilibrium
D) All of these choices can create linkage disequilibrium.
D
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Why does Neisseria gonorrhea adhere only to mucosal epithelial cells in the genitourinary tract, eye, rectum, and throat?
What will be an ideal response?
An excitatory postsynaptic potential
a. is only one of several types of graded potential. b. has a hyperpolarizing effect. c. will drive the membrane away from its potential. d. is summed with an inhibitory postsynaptic potential at the input zone of a neuron in a process known as synaptic integration. e. is none of these.
A clinical microbiologist makes serial dilutions of several antimicrobials in broth, and then incubates each drug dilution series with a standard amount of a patient's isolated pathogen. What is this microbiologist setting up?
A. A Kirby-Bauer technique B. A antibiogram C. An E-test D. A therapeutic index (TI) E. A minimum inhibitory concentration (MIC) test
The cells of the human body can differ in size and shape, and some can even alter their shape. This is an example of cellular diversity.
a. true b. false