A structural chromosomal abnormality is described by which of the following?
Chromosome breakage with improper repair
Nondisjunction of chromosomes during Meiosis I
Nondisjunction of chromosomes during Meiosis II
Extra chromosomes created and added to genome
How many chromosomes could someone with polypoidy have?
69 chromosomes
47 chromosomes
45 chromosomes
You can survive with only one X chromosome.
Dispermy results in?
Triploidy
Tetraploidy
Polyploidy
The most common pregnancy complication is .
A baby is born with feet shaped like rockers and clenched hands. The baby had poor prenatal growth. Which of the following describe the condition of the baby?
Edwards Syndrome, Nondisjunction
Edwards Syndrome, Robertsonian Translocation
Patau Syndrome, Nondisjuction
Patau Syndrome, Robertsonian Translocation
All of the following include trisomy. Down Syndrome is a defect in chromosome ❌. Edwards Syndrome is a defect in chromosome ❌. Patau is a defect in chromosome ❌.
Turner Syndrome is a result of nondisjunction of maternal chromosomes.
The Turner Syndrome genotype is . The Klinefelter genotype is . The Tripe X Syndrome genotype is . The last sex chromosome disorder involves paternal meiosis II nondisjunction and is called
Which of the following (more than one?) could be caused by maternal nondisjuction?
Turner Syndrome
Triple X Syndrome
Klinefelter Syndrome
Edwards Syndrome
Which of the following would result in a phenotypically normal individual?
Robertsonian translocation
Deletion
Duplication
Isochromosome
Which of the following would describe a male with a balanced reciprocal translocation involving 3q and 17p?
44 Structurally normal chromosomes
An abnormal phenotype
No increased risk of miscarriage
1 structurally abnormal chromosome
A 4 month old female infant is not obtaining normal developmental milestones and has failure to thrive. Chromosome analysis reveals an abnormality; one copy of chromosome 21 has extra genetic material attached to the long arm. The origin of the extra material is not obvious. All other chromosomes appear normal. How would you interpret this finding?
She has down syndrome
She has a partial trisomy 21
This was inherited from one of her parents who has a balanced abnormal segregation.
The abnormality could be phenotypically mild.
A monosomy is worse than a trisomy.
A baby is born with only one chromosome 15 with the two q arms attached at one centromere. Which of the following most correctly describes the baby's condition.
An unbalanced structural mutation
Mosaicism for chromosome 15
Monosomy for chromosome 15
