Achondroplasia, a hereditary form of dwarfism, is an autosomal dominant disorder; however homozygous dominant
individuals either die before birth or very shortly thereafter. The homozygous recessive condition is normal. A dwarf
couple decide to have children. Use this information to answer the following question:Of
the children of this couple who survive, what is probability that they will be affected by achondroplasia?
a. 0
b. ¼
c. 1/3
d. 2/3
e. ½
ANSWER: d
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Due to the faulty transport protein ________ ions cannot leave the cell and ________ accumulates on the cell's surface
a. potassium, mucus b. hydrogen, mucus c. chloride, salts d. chloride, mucus e. sodium, cancer
There is a molecule in black licorice that inhibits an enzyme which normally limits activation of mineralocorticoid receptors. Thus, overconsumption of licorice can mimic the effect of excess aldosterone. What would be the result?
A. infertility in men B. hypertension (high blood pressure) due to insufficient potassium in the blood C. excessive body hair D. low blood pressure due to excessive potassium in the blood Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about the aldosterone? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Mifepristone, also known as RU-486, is used in combination with ____ to terminate an unwanted pregnancy
a. copper b. cyclooxygenase c. estrogen d. progesterone e. a prostaglandin
Marfan syndrome is the result of inheriting a single allele. Individuals with Marfan syndrome are tall and long-limbed, and have both cardiovascular and eye defects. Marfan syndrome is an example of ________.
A. codominance B. homozygous recessive C. pleiotropy D. incomplete dominance