6·17–6·18 Deviations from the normal chromosome number lead to problems.
Chapter
6. 6·17–6·18 Deviations from the normal chromosome number lead to problems.
Show What You Know
Show What You Know - Self Quiz
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You must read each slide, and complete any questions on the slide, in sequence.
Instructions
Check your understanding of concepts from 6·17–6·18 Deviations from the normal chromosome number lead to problems by answering the following questions.
1.
1. Nondisjunction:
A.
B.
C.
D.
E.
Correct! (See section 6·17 Down syndrome can be detected before birth: karyotypes reveal an individual’s entire chromosome set.)
Incorrect. (See section 6·17 Down syndrome can be detected before birth: karyotypes reveal an individual’s entire chromosome set.)
2.
2. What type of chromosomal abnormality leads to the phenotype known as Down syndrome?
A.
B.
C.
D.
E.
Correct! (See section 6·17 Down syndrome can be detected before birth: karyotypes reveal an individual’s entire chromosome set.)
Incorrect. (See section 6·17 Down syndrome can be detected before birth: karyotypes reveal an individual’s entire chromosome set.)
3.
3. A karyotype:
A.
B.
C.
D.
E.
Correct! (See section 6·17 Down syndrome can be detected before birth: karyotypes reveal an individual’s entire chromosome set.)
Incorrect. (See section 6·17 Down syndrome can be detected before birth: karyotypes reveal an individual’s entire chromosome set.)
4.
4. A man having the "super male" genotype, meaning he has one extra Y-chromosome (XYY) marries a woman who is "meta female," having an extra X-chromosome (XXX). All of the following are possible genotypes of their children, EXCEPT:
A.
B.
C.
D.
E.
Correct! (See section 6·18 Life is possible with too many or too few sex chromosomes.)
Incorrect. (See section 6·18 Life is possible with too many or too few sex chromosomes.)
5.
5. "Metafemales" are:
A.
B.
C.
D.
E.
Correct! (See section 6·18 Life is possible with too many or too few sex chromosomes.)
Incorrect. (See section 6·18 Life is possible with too many or too few sex chromosomes.)