Final study guide D115 Questions & Answers 100% Correct!!

How is transcription best defined? - ANSWERRNA is synthesized from a DNA template. An amniocentesis indicates a neural tube defect when an increase in which protein is evident? - ANSWERAlpha fetoprotein Amniocentesis is recommended for pregnant with what history? - ANSWERHave a family history of genetic disorders 35 or older 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 chromosomal abnormalities at 10 to 12 weeks' gestation? - ANSWERChorionic villus sampling *Amniocentesis is usually performed during the 15th week of pregnancy or later. What is the term for an error in which homologous chromosomes fail to separate during meiosis or mitosis? - ANSWERNondisjunction What is the most common cause of Down syndrome? - ANSWERMaternal nondisjunction What syndrome, characterized by an absent homologous X chromosome with only a single X chromosome, exhibits features that include a short stature, widely spaced nipples, and webbed neck? - ANSWERTurner Syndrome A person with 47, XXY karyotype has the genetic disorder resulting in which syndrome? - ANSWERKlinefelter Syndrome When a child inherits a disease that is autosomal recessive, it is inherited from whom? - ANSWERBoth Parents Cystic fibrosis is caused by what type of gene? - ANSWERautosomal recessive The BRCA1 and BRCA2 mutations increase the risk of which cancer in women? - ANSWERovarian Prader-Willi syndrome causes a chromosomal defect that is what? - ANSWERinherited from the father