Which change to the chromosome causes robertsonian translocation?
a. part of the chromosome breaks off, causing missing genes on the chromosome
b. movement of genes on the same chromosome
c. duplication of genes on the same chromosome
d. arms of the chromosome are unproportioned, with extra or missing genetic material

the national environmental policy act (nepa) is a united states environmental law that promotes the enhancement of the environment and established the president's council on environmental quality (ceq). the law was enacted on january 1, 1970. to date, more than 100 nations around the world have enacted national environmental policies modeled after nepa.

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