Which of the following can be diagnosed by examining a karyotype of an individual's white blood cells?

(A) Sickle cell anemia
(B) Alzheimer disease
(C) Down syndrome
(D) Cystic fibrosis
(E) Duchenne muscular dystrophy


Ans: (C) Down syndrome

Biology & Microbiology

You might also like to view...

What differentiates diagnostic techniques that employ phenotypic (culture-based) methods from those that employ molecular methods?

a. Phenotypic methods are highly sensitive and specific, while molecular methods are not. b. Phenotypic methods examine the growth behavior of a microorganism and the pro-teins, enzymes, or toxins produced, while molecular methods examine the genetic makeup. c. Phenotypic methods are quantitative while molecular methods are not. d. Phenotypic methods are not limited to de-tection of live organisms as are molecular methods.

Biology & Microbiology

Members of the ____ lizard genus are commonly used as model systems for studies of ecology and evolutionary

biology.

a. Ichthyostega b. Anolis c. Dunkleosteus d. Eusthenopteron e. Archaeopteryx

Biology & Microbiology

The difference between cystic fibrosis and migraine is that the

A) former is caused by various environmental factors. B) former can be traced to a single gene. C) former is caused by the absence of a chromosome. D) latter is a Mendelian trait.

Biology & Microbiology

Which of the following conditions would most likely lead to an apparently normal human female?

a. Turner syndrome b. Down syndrome c. cri-du-chat d. Triple-X syndrome e. Klinefelter syndrome

Biology & Microbiology