WGU D115 UNIT 2 Questions and Answers (Verified Answers)

1. Which type of genetic disease affects males more frequently than females? Sex-linked recessive Autosomal recessive Autosomal dominant Sex-linked dominant Sex-Linked recessive. Since males only have one X andone Y, if the affected chromosome has the illness, it will be expressed. 2. In which two conditions are chromosomal abnormalities the leading known cause? Intellectual disability Respiratory disorders Fetal miscarriage Cardiovascular disease Mental illness Check My Answer Intellectual disability and fetal miscarriage. Chromosome ab- normalities are the leading known cause of intellectual2 / 9 disability and fetal miscar-riage. 3. What are three examples of prenatal diagnostic studies? Drug-sensitivity testing Chorionic villus sampling (CVS) Microscopy of cervical mucosa Preimplantation genetic testing (PGT) Amniocentesis Chorionic villus sampling (CVS), amniocentesis, and preimplan-tation genetic testing (PGT) are examples of prenatal diagnostic studies and are performed in vitro. CVS is a form of genetic testing that provides genetic informationfound in utero and is usually performed between weeks 11 and 14 of pregnancy. An amniocentesis is a form of genetic testing that evaluates amniotic fluid and is usually performed during the second trimester, between weeks 15 and 20 of pregnancy. PGT is performed on the embryo prior to implantation. 4. Which genetic disorder is characterized by the presence of a zygote having one chromosome with a normal complement of genes and one chromosome with a missing gene? Klinefelter syndrome Down syndrome Cri du chat syndrome Turner syndrome Cri du chat syndrome (translated as "cry of the cat") is caused