Genetic Disorders and Phenotypes

Front

What is LHON and which subunit of complex I of the ETC is affected?

Back

LHON (Leber's Hereditary Optic Neuropathy) is caused by a substitution in the ND4 subunit of complex I of the electron transport chain (ETC).

Tags

NGSS.HS-LS3-2

Front

What is the role of TGF-beta in genetic disorders related to FBN1/Fibrillin?

Back

Defects in FBN1/Fibrillin lead to an increase in TGF-beta, which is associated with individuals having longer limbs.

Front

What are the specific traits associated with NF2?

Back

NF2 (Neurofibromatosis type 2) is characterized by cafe au lait spots and vestibular schwannomas.

Front

What genetic deletion is associated with Angelman syndrome?

Back

Angelman syndrome is associated with a maternal deletion of UBE3A or paternal uniparental disomy (UPD) of chromosome 15.

Front

What are the key features of Pallister-Killian syndrome?

Back

Pallister-Killian syndrome (Tetrasomy 12p) includes 'Boxer facies', speech delay or absence, diaphragmatic hernia, and streaks of hypo-hyper pigmentation.

Front

Define Genetic Disorder.

Back

A genetic disorder is a disease caused by an abnormality in an individual's DNA, which can be inherited or caused by mutations.

Tags

NGSS.HS-LS3-2

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

Front

Explain the concept of uniparental disomy (UPD).

Back

Uniparental disomy (UPD) occurs when both copies of a chromosome are inherited from one parent instead of one from each parent.

Tags

NGSS.HS-LS3-1

Front

What is the significance of the ND4 subunit in mitochondrial genetics?

Back

The ND4 subunit is part of complex I in the mitochondrial electron transport chain and is crucial for ATP production; mutations can lead to mitochondrial diseases.

Tags

NGSS.HS-LS1-7

Front

What is the relationship between TGF-beta and Marfan syndrome?

Back

In Marfan syndrome, mutations in the FBN1 gene lead to increased TGF-beta signaling, contributing to the disorder's symptoms.