what three biochemical properties distinguish endotoxins?
What will be an ideal response?
made of lipid A
heat stable (resistant)
toxin only in large quantities
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Rice and its grain relatives, maize, barley, and wheat, diverged from a common ancestor 50 million years ago. However, the chromosomes of these plants demonstrate extensive conserved arrangements of segments. This phenomenon is called
A. linkage disequilibrium. B. single nucleotide polymorphisms. C. contig. D. synteny. E. expressed sequence equilibrium.
Fox squirrels living in Colorado and Eastern
gray squirrels living in Minnesota provide an example of what type of isolating mechanism?
a. ecological b. temporal c. mechanical d. behavioral e. genetic
Homeotic genes code for transcription factors. Indicate whether the statement is true or false
Which of the following are primary lymphoid tissues?
A) thymus and lymph nodes B) lymph nodes and spleen C) spleen and mucosa-associated lymphoid tissue D) thymus and bone marrow E) bone marrow and mucosa-associated lymphatic lymphoid tissue