Author Question: Autosomal dominant inheritance occurs when an abnormal gene pair dominates the inheritance pattern ... (Read 125 times)

bb · **on:** Jun 28, 2018

Autosomal dominant inheritance occurs when an abnormal gene pair dominates the inheritance pattern and children have a 50 chance of being affected. An example of an autosomal dominant disorder would be:

A) Huntington's disease C) Phenylketonuria
B) Sickle cell disease D) Cystic fibrosis

Question 2

Trisomies are the product of the union of a normal ovum and sperm with a gamete that contains an extra chromosome. An infant born with Down syndrome would have which of the following karyotypes?

A) 46 chromosomes, 3 copies of chromosome 18
B) 48 chromosomes, 2 copies of chromosome 13
C) 47 chromosomes, 3 copies of chromosome 21
D) 46 chromosomes, 1 copy of chromosome XXY