Asked by Federico Maeso on May 03, 2024
Verified
In Down syndrome, the Dart gene causes mental impairment by increasing the levels of pyrimidines in the blood.
Pyrimidines
One of the two types of nitrogenous bases found in nucleic acids, including cytosine, thymine (in DNA), and uracil (in RNA).
Mental Impairment
A reduction in cognitive, emotional, or behavioral functioning, which may affect daily living and can be temporary or permanent.
- Uncover the genetic roots of chromosomal deviations such as Down syndrome and Turner syndrome.
Verified Answer
JC
jessica cisnerosMay 05, 2024
Final Answer :
False
Explanation :
Down syndrome is typically caused by a full or partial extra copy of chromosome 21, rather than a gene called Dart. The increased levels of pyrimidines in the blood seen in Down syndrome are a result of the extra chromosome disrupting normal metabolic processes. Mental impairment is a common characteristic of individuals with Down syndrome.
Learning Objectives
- Uncover the genetic roots of chromosomal deviations such as Down syndrome and Turner syndrome.