A baby who was slow to grow before birth still has a low body weight as a newborn. The baby has organ abnormalities, including heart defects, and a small, abnormally shaped head. Karyotype analysis reveals an extra copy of chromosome 18. Which chromosomal disorder does this baby have? Question 4 options: Turner syndrome Patau syndrome Edwards syndrome Down syndrome Klinefelter syndrome
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The baby is slow to grow before birth, has low body weight as a newborn, organ abnormalities (including heart defects), and a small, abnormally shaped head. Show more…
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b. A person with Edwards syndrome would have (number) monads that are autosomal after the S phase, and (number) total monads, whereas someone with Turner syndrome would have total dyads after S phase. (See Table 10.1) c. Which of the chromosomal abnormalities affecting one chromosome cause the chromosome to be larger? See slide 7. Duplication d. What kind of chromosomal abnormality is involved in cri-du-chat syndrome? Deletion e. All human chromosomes contain one constriction which is the location of the TABLE 10.1 Variations in Chromosome Number, Barr Bodies, and Corresponding Phenotypes and Syndromes* Phenotype or Syndrome Total No. of Chromosomes Sex Chromosome Complement No. of Barr Bodies per Nucleus Normal female 46 XX 1 Normal male 46 XY 0 Male with Klinefelter syndrome 47, 48, 49 XXY, XXXY, XXXXY 1, 2, 3 Female with Turner syndrome 45 X 0 Male with XYY karyotype 47 XYY 0 Female with trisomy X 47 XXX 2 Down syndrome (trisomy 21) 47 XX or XY 1 if female; 0 if male Edwards syndrome (trisomy 18) 47 XX or XY 1 if female; 0 if male Patau syndrome (trisomy 13) 47 XX or XY 1 if female; 0 if male
Adi S.
Which of the following is also called trisomy 13? Edwards syndrome Jacobs syndrome Williams syndrome Patau syndrome Down syndrome
Joanna Q.
2. A child with Edwards Syndrome has the karyotype shown. Children born with this disease are small, cognitively impaired, and die as infants due to heart failure. a. What is abnormal about the karyotype? b. Circle a homologous pair of chromosomes on the karyotype.
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