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Showing posts with label Genetics. Show all posts
Showing posts with label Genetics. Show all posts
Thursday, December 23, 2010
Clinical Case: Trisomy 21 Complications
10:27 PM | 
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Unknown
Clinical Vignette: A 42-year-old woman is pregnant and undergoes amniocentesis. The results of the amniocentesis are consistent with trisomy 21, but the woman wishes to carry the pregnancy to term. After birth, this child will be at increased risk for the development of which of the following neoplasms?
A. Acute lymphoblastic leukemia
B. Basal cell carcinoma
C. Colon cancer
D. Glioblastoma multiforme
E. Hodgkin's disease
A. Acute lymphoblastic leukemia
B. Basal cell carcinoma
C. Colon cancer
D. Glioblastoma multiforme
E. Hodgkin's disease
Clinical Case: Number Of Nucleotides....
Clinical Vignette: Transcription of a prokaryotic gene by RNA polymerase yields an mRNA corresponding to a single polypeptide chain containing 64 amino acids. The mRNA has a 5' untranslated region of 120 nucleotides and a 3' untranslated region of 240 nucleotides. Approximately how many nucleotides are in the coding region of the mRNA?
A. 64
B. 128
C. 192
D. 424
E. 552
A. 64
B. 128
C. 192
D. 424
E. 552
Clinical Case: A Child With Microcephaly, Cat-Like Cry.....
Clinical Vignette: A 6-month-old child with severe mental retardation is brought to a specialty clinic. Physical examination is remarkable for microcephaly, a cat-like cry, and an anti-mongoloid slant to the palpebral fissures. This child should be further evaluated for which of the following disorders?
A. Duodenal atresia
B. Hepatocellular carcinoma
C. Nephroblastoma
D. Renal cysts
E. Ventricular septal defect
A. Duodenal atresia
B. Hepatocellular carcinoma
C. Nephroblastoma
D. Renal cysts
E. Ventricular septal defect
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