Schizophrenia has been shown to be a single gene disorder. Indicate whether the statement is true or false
F
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A carrier is a person who
a. carries a recessive gene for a genetic disorder but shows no signs or symptoms. b. shows signs and symptoms of a genetic disorder only under conditions of stress or other illness. c. carries a gene for a genetic disorder and shows signs and symptoms most of the time. d. carries a gene for a genetic disorder and shows signs and symptoms all of the time. e. carries a gene for a genetic disorder and shows a reduced degree of signs and symptoms.
Mutations that occur in one member of a gene pair that arose from gene duplication may create _____
A) a pseudogene B) a gene with a new function C) a gene family with two distinct but related members D) a pseudogene, a gene with a new function, and a gene family with two distinct but related members
Researchers studying an endangered lizard species find a successful population of the lizard in a certain area. The researchers determine that this population has reproduced primarily through parthenogenesis. What are the researchers likely to recommend to conservation officials who are trying to protect the species?
a) move the successful population to a different area where lizard populations are struggling b) remove all lizards from the wild and place them in a captive breeding program c) remove as many predators as possible from the area with the successful population d) try to prevent changes to the environment in the area with the successful population
In a ________ circulatory system, circulation of blood is more controlled-the blood is moved faster and more efficiently than in other types of circulatory systems.
Fill in the blank(s) with the appropriate word(s).