what is wheal and flare?

What will be an ideal response?


fluid filled bump

Biology & Microbiology

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An earthquake decimates a ground-squirrel population, killing 98% of the squirrels. The surviving population happens to have broader stripes, on average, than the initial population. If broadness of stripes is genetically determined,

what effect has the ground-squirrel population experienced during the earthquake? A) directional selection B) disruptive selection C) a founder event D) a genetic bottleneck E) gene flow

Biology & Microbiology

Treatment of drinking water by UV irradiation is effective at ________, but it does NOT remove ________

A) killing bacteria and eukaryotic pathogens / odor- and taste- altering organic compounds B) killing viruses / bacteria and eukaryotic pathogens C) removing order- and taste- altering organic compounds / viruses D) killing bacteria / viruses and eukaryotic pathogens

Biology & Microbiology

Modern nonvascular plants are generally small because they lack leaves

a. True b. False

Biology & Microbiology

Autoimmune disorders or a tumor of the thyroid can lead to

a. diabetes insipidus. b. diabetes mellitus. c. a simple goiter. d. acromegaly. e. Graves disease.

Biology & Microbiology