Down Syndrome Is Caused by

question 68

Multiple Choice

Down syndrome is caused by

• A)nondisjunction or a translocation.
• B)the karyotype XXY.
• C)an extra Y chromosome.
• D)a missing autosome.

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Definitions:

Common Resource

A resource like air or water that is not owned by anyone, cannot be easily limited to specific users, and is available for everyone to use, which might lead to overuse and depletion.

Public Park

A space that can be natural, semi-natural, or landscaped, designated for the enjoyment and recreation of people, or to safeguard wildlife or natural ecosystems.

Tragedy of the Commons

A situation in an economic system where individuals, acting independently and rationally according to their self-interest, behave contrary to the best interests of the whole group by depleting or spoiling shared resources.

Club Good

A type of good that is excludable and non-rivalrous, meaning access can be controlled and one person's use does not substantially reduce availability to others.