Which vaccine-preventable disease caused by an RNA virus has been nearly eradicated?
A. measles
B. influenza
C. hantavirus
D. polio
E. rotavirus
Answer: D
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Why is the traditionally defined taxon Reptilia paraphyletic?
What will be an ideal response?
Over 90% of the worldwide deaths from malaria in 2011 occurred in:
a. Africa b. India c. Mexico d. Southeast Asia e. South America
Which of the following are most closely related to
the choanoflagellates? a. animals b. fungi c. amoebozoans d. algae e. none of these
The law of segregation states that:
a) the number of chromosomes in a cell is always divisible by 2. b) Eggs and sperm separate before fertilization occurs. c) gametes cannot be separate and equal. d) each of two alleles for a given trait segregate into different gametes. e) an allele on one chromosome will always segregate from an allele on a different chromosome.