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Individuals with trisomy $21,$ or __________ and physically retarded and have abnormalities of the face, tongue, and eyelids. (a) Down syndrome (b) Klinefelter syndrome (c) Turner syndrome (d) Huntington's disease(e) Tay-Sachs disease
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Trisomy 21 is a condition in which an individual has three copies of chromosome 21 instead of the usual two. This extra genetic material disrupts the normal course of development, causing the characteristic features of Down syndrome. Show more…
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Individuals with trisomy $21,$ or __________ and physically retarded and have abnormalities of the face, tongue, and eyelids. (a) Down syndrome (b) Klinefelter syndrome (c) Turner syndrome (d) Huntington's disease (e) Tay-Sachs disease
Trisomy of chromosome 21 is called a. Down syndrome. b. Klinefelter syndrome. c. Turner syndrome. d. Jacobs syndrome.
What type of chromosomal abnormality leads to the phenotype known as Down syndrome? a) trisomy 21 b) monosomy 21 c) monosomy 22 d) trisomy 22 e) disomy 21
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