Author Question: Explain how intellectual disability may result from PKU. What will be an ideal ... (Read 185 times)

crobinson2013

  • Hero Member
  • *****
  • Posts: 535
Explain how intellectual disability may result from PKU.
 
  What will be an ideal response?

Question 2

Discuss two conditions that can arise from chromosomal abnormalities.
 
  What will be an ideal response?



nikmaaacs

  • Sr. Member
  • ****
  • Posts: 335
Answer to Question 1

One of the best understood examples of a single gene condition is phenylketonuria (PKU), a rare disorder occurring in approximately 1 in 15,000 individuals (Waisbren, 2011). Unlike chromosomal abnormalities that cause Down syndrome, the cause of PKU is a recessive gene transmitted by typical Mendelian mechanisms.

Answer to Question 2

The most common disorder that results from a chromosome abnormality is Down syndrome. These abnormalities also can occur in the number of sex chromosomes, resulting in intellectual disability syndromes such as Klinefelter's (XXY, a disorder in which males have an extra X chromosome) and Turner's (XO, a disorder in which women are missing a second X chromosome).



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

For a complete list of videos, visit our video library