Which febrile disease with a rash has a pathogen that can cross the placenta and cause serious fetal damage?
A. Croup
B. Mumps
C. Rubella
D. Measles (rubeola)
E. Influenza
Answer: C
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Two pairs of electrons shared between two atoms is called a __________. Fill in the blank(s) with the appropriate word(s)
Which of the following is a long-term effect of heroin use?
Select one: a. The body decreases the production of endorphins. b. The body increases the production of endorphins. c. a decrease in dopamine production d. a release of excess dopamine e. All of the answer choices are long-term side effects of heroin use.
Prokaryotic cells are diploid
Indicate whether the statement is true or false
Which statement correctly describes single-nucleotide polymorphisms (SNPs)?
a. A SNP locus typically has more than two alleles. b. SNPs are typically used as markers of a region of the genome. c. The frequency of the rarer SNP allele must be less than 1%. d. SNPs are the least common form of human genetic variation. e. If only two alleles are associated with a SNP, both must have relatively the same frequency in the population.