Prion diseases are always fatal and there is no treatment

a. True
b. False
Indicate whether the statement is true or false


True

Biology & Microbiology

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In general, sympatric speciation requires the action of _____ selection acting against hybrids

A. disruptive B. stabilizing C. directional D. artificial E. ecological

Biology & Microbiology

Hematocrit makes up approximately ____ percent of the total blood volume

a. 10 b. 25 c. 45 d. 50 e. 70

Biology & Microbiology

Two or more alleles of a gene present at relatively high frequencies in a population’s gene pool is known as ____

a. disruptive selection b. sexual dimorphism c. directional selection d. stabilizing selection e. balanced polymorphism

Biology & Microbiology

Evolution is defined as the change in _________ in a species population over time.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology