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Choose the one most appropriate answer for each. Choices are used only once.
-thyroid gland
Recessive Gene Pair
Two copies of a gene on a chromosome that must both be present for a recessive trait to be expressed.
Extra Chromosome
An abnormal condition where an individual has more than the usual number of chromosomes, leading to genetic disorders.
Mental Retardation
This term, now considered outdated and offensive, was formerly used to describe developmental delays in intellectual functioning and adaptive behavior. The more accepted term is "intellectual disability."
Motor Retardation
A delay or slowness in the development or use of the motor skills that significantly interferes with daily living.
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