What Is the Source of the Extra Chromosome 21 in an Individual

question 37

Multiple Choice

What is the source of the extra chromosome 21 in an individual with Down syndrome?

• A) nondisjunction in the mother only
• B) nondisjunction in the father only
• C) duplication of the chromosome
• D) nondisjunction or translocation in either parent
• E) It is impossible to detect with current technology.

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Definitions:

Bootstrap Confidence Interval

A statistical method for estimating the range within which a population parameter is likely to lie, based on resampling the original data with replacement.

Average Grade

The mean score of a group of grades, calculated by adding all the grades and then dividing by the number of grades.

Percentile Method

A statistical technique used to estimate values at specific points in a distribution, such that a certain percentage of the distribution falls below that value.

Burning Times

The duration that a material sustains burning under specified conditions.