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NURG 603, Module 11 GENETICS IN PREGNANCY NEWEST exam with verified solutions

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NURG 603, Module 11 GENETICS IN PREGNANCY NEWEST exam with verified solutions

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NURG 603, Module 11 GENETICS IN
PREGNANCY NEWEST exam with
verified solutions

How many chromosomes does the typical person have? - correct answer ✔46
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Review screening per trimester in the ACOG book - correct answer ✔**First trimester:
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Serum Screening, Ultrasound, Circulating Cell-free DNA.
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**Second Trimester: Triple/Quad screening, Ultrasound, Maternal serum AFP
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**Integrated is combination of first and second trimester screening |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




True or False? In X-linked dominant inheritance the person needs only a single copy of an X-
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




linked dominant gene to manifest the disease. - correct answer ✔- TRUE. Individuals with
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




one dominant allele for a disorder with express disease and transmit to 50% of offspring.
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(pg 77 OBGYN book)
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True or False? X-linked recessive disorders are more common among males. - correct
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answer ✔- TRUE (pg 77 OBGYN book) |||||| |||||| |||||| |||||| |||||| ||||||




True or False? Hemophilia and color blindness are more common among males. - correct
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answer ✔- TRUE: Hemophilia and color blindness are X-linked recessive disorders. These are
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more common in males (pg. 77 in ACOG book)
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True or False? Trisomy 21 is Down's syndrome and either 47XX or 47XY. - correct answer ✔-
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




TRUE
||||||

,What is a teratogen and when does it have the greatest effect on organ development? -
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




correct answer ✔- Teratogens are substances that may produce physical or functional
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




defects in the human embryo or fetus after the pregnant woman is exposed. Greatest effect
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on organ development and the embryo during periods of rapid growth and differentiation
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(day 15-60, embryo). |||||| ||||||




Three Broad Categories: |||||| ||||||




- Drugs and Chemical Agents
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- Infectious agents
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- Radiation
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Cystic Fibrosis is an example of what type of genetic mutation? - correct answer ✔-
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Autosomal recessive ||||||




- Deletion-- results from deletion in chromosome structure (deletion of 3 DNA bases from
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




CFTR gene) ||||||




Klinefelter Syndrome: - correct answer ✔47XXY |||||| |||||| |||||| |||||| ||||||




|||||| Seen only in males |||||| |||||| ||||||




|||||| Small testes ||||||




|||||| Aspermatogenesis & gynecomastia |||||| ||||||




|||||| Taller than average with very long arms and legs
|||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




|||||| Often learning disability/sub-average intelligence
|||||| |||||| ||||||

, Turner's Syndrome - correct answer ✔45 X |||||| |||||| |||||| |||||| |||||| ||||||




|||||| Seen only in Females |||||| |||||| ||||||




|||||| Short stature, webbed neck, broad chest, absence of sexual maturation
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




|||||| Only 5% are fertile (usually don't have ovaries)
|||||| |||||| |||||| |||||| |||||| |||||| ||||||




|||||| Need estrogen during teen years for secondary sex characteristics
|||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Trisomy 21 - Down Syndrome: - correct answer ✔(47 XX or 47 XY)
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




|||||| 1 in 800 births
|||||| |||||| ||||||




|||||| Only 2% live beyond 50 years|||||| |||||| |||||| |||||| ||||||




|||||| Increase incidence<20 years old or>35 |||||| |||||| |||||| ||||||




|||||| Moderate to severe mental retardation |||||| |||||| |||||| ||||||




|||||| 50% have Simian crease |||||| |||||| ||||||




|||||| Low nasal root, small ears, flat occiput, short neck
|||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




|||||| GI atresia can include closure or absence of the duodenum, esophagus, and/or anus
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||

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