Final study guide D115 questions with answers

Final study guide D115 questions with answers
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How is transcription best defined? - CORRECT ANSWERS
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✔✔RNA is synthesized from a DNA template.
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An amniocentesis indicates a neural tube defect when an
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increase in which protein is evident? - CORRECT ANSWERS
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✔✔Alpha fetoprotein
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Amniocentesis is recommended for pregnant with what |\ |\ |\ |\ |\ |\ |\


history? - CORRECT ANSWERS ✔✔Have a family history of
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genetic disorders |\




35 or older
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positive prenatal screening test |\ |\ |\




chromosomal condition or neural tube defect in a |\ |\ |\ |\ |\ |\ |\ |\


previous pregnancy |\




abnormal ultrasound results |\ |\




What is the technique for prenatal diagnosis of
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chromosomal abnormalities at 10 to 12 weeks' gestation? |\ |\ |\ |\ |\ |\ |\


- CORRECT ANSWERS ✔✔Chorionic villus sampling
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*Amniocentesis is usually performed during the 15th |\ |\ |\ |\ |\ |\ |\


week of pregnancy or later.
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,What is the term for an error in which homologous
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chromosomes fail to separate during meiosis or mitosis? - |\ |\ |\ |\ |\ |\ |\ |\


CORRECT ANSWERS ✔✔Nondisjunction
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What is the most common cause of Down syndrome? -
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CORRECT ANSWERS ✔✔Maternal nondisjunction
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What syndrome, characterized by an absent homologous
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X chromosome with only a single X chromosome, exhibits
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features that include a short stature, widely spaced
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nipples, and webbed neck? - CORRECT ANSWERS
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✔✔Turner Syndrome |\




A person with 47, XXY karyotype has the genetic disorder
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resulting in which syndrome? - CORRECT ANSWERS
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✔✔Klinefelter Syndrome |\




When a child inherits a disease that is autosomal
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recessive, it is inherited from whom? - CORRECT
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ANSWERS ✔✔Both Parents |\ |\




Cystic fibrosis is caused by what type of gene? - CORRECT
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ANSWERS ✔✔autosomal recessive
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The BRCA1 and BRCA2 mutations increase the risk of
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which cancer in women? - CORRECT ANSWERS ✔✔ovarian
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, Prader-Willi syndrome causes a chromosomal defect that
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is what? - CORRECT ANSWERS ✔✔inherited from the
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father


Which type of immunity is produced by an individual after
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either natural exposure to the antigen or after
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immunization against the antigen? - CORRECT ANSWERS |\ |\ |\ |\ |\ |\ |\


✔✔Active-Acquired


What type of immunity is produced when an
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immunoglobulin crosses the placenta? - CORRECT |\ |\ |\ |\ |\ |\


ANSWERS ✔✔passive-acquired |\




Where are antibodies produced? - CORRECT ANSWERS
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✔✔plasma cells |\




Which antibody initially indicates a typical primary
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immune response? - CORRECT ANSWERS ✔✔IgM
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The common hay fever allergy is expressed through a
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reaction that is mediated by which class of
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immunoglobulins? - CORRECT ANSWERS ✔✔IgE |\ |\ |\ |\




What are blood transfusion reactions an example of? -
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CORRECT ANSWERS ✔✔Alloimmunity |\ |\