Describe Down syndrome. What it is, its causes, and its symptoms? What are the odds of having a child with Down syndrome?
What will be an ideal response?
A good answer will be similar to the following:
+ Down syndrome is a genetic disorder that is caused by an extra 21st chromosome that is usually provided by the egg.
+ Symptoms:
- almond-shaped eyes
- a fold over the eyelid
- smaller than normal head, neck, and nose
- delayed mental and behavioral development
- intellectual disability
+ Odds that a woman will bear a child with Down syndrome increases markedly as she gets older. The increased risk may be because a woman's eggs have been in her ovaries since her own prenatal development.
- For a woman in her late 20s — the risk is about 1 in 1,000.
- For a woman in her early 40s — the risk is about 1 in 50.
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According to Robertson's work with stage development, for stages to exist
A. each stage must be unique from all others B. the order of stages must be invariant C. the stages must be universal D. all of the above
Suppose you were a participant in a study on information processing. Your thought processes would be likened to the
a. genetics of your parents. b. actions of a primate. c. other people in your age category. d. functions of a computer.