Precipitation is generally most acidic in which region of the United States?
a. Southeast
b. Southwest
c. Northwest
d. Northeast
e. Midwest
d
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You are a genetic counselor, and a couple comes to you with concerns that if they have a child
together it could have hemophilia. Neither one of them has hemophilia, but the woman's biological father did have an X-linked recessive form of hemophilia. Which of the following would be a correct thing to tell them?
a. Any child that they produce will have a 50% chance of having hemophilia. b. All of their male offspring will have hemophilia, and each of their female offspring will have a 50% chance of having hemophilia. c. None of their offspring should have hemophilia, but all of their female offspring will be carriers for hemophilia. d. Each of their male offspring will have a 50% chance of having hemophilia, and while their female offspring should not have hemophilia, they will each have a 50% chance of being carriers. e. All of their male offspring will have hemophilia, and while their female offspring should not have hemophilia, they will all be carriers.
Plant parasites that are photosynthetic but draw water and nutrients from their host plant are referred to as
A) mycorrhizae. B) vectors. C) parasitoids. D) hemiparasites.
As a result of the long refractory period generated by __________, cardiac muscle can not exhibit __________.
A. the influx of calcium ions, tetanus (tetanic contractions) B. the out flow of K+, tetanus (tetanic contractions) C. the influx of Na+, tetanus (tetanic contractions) D. the influx of Ca++, recruitment E. the out flow of K+, recruitment
A DNA vaccine involves placing genes into a plasmid and introducing the plasmid into human cells. Human cells then transcribe and translate the genes to produce antigen which immunize the recipient. What is the source of the genes being introduced?
A) a member of the patient's microbiome B) a laboratory animal (such as a mouse) C) a harmless virus D) human B or T cells E) a pathogen