Only Nine Types of Aneuploids Are Known in Newborns Because

question 34

Multiple Choice

Only nine types of aneuploids are known in newborns because

• A)only nine chromosomes undergo nondisjunction.
• B)most types of aneuploids are lethal early in development.
• C)most aneuploids do not cause detectable defects.
• D)most aneuploids do not affect the phenotype.

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Definitions:

Difference Threshold

The minimum difference in stimulation needed to detect a change or difference between two stimuli.

Just-noticeable Difference

The smallest change in intensity of a stimulus that can be detected.

Absolute Threshold

The minimum intensity of a stimulus at which it can be detected by an individual at least 50% of the time.

Difference Threshold

The minimum difference in stimulation that a person can detect 50% of the time, also known as just noticeable difference (JND).