Understanding Retinitis Pigmentosa and Genetic Research

Sam Walker, a college student, discovers he has retinitis pigmentosa (RP), a genetic eye disease. Dr. Edwin Stone, an expert in RP, investigates Sam's DNA to identify the mutation causing his vision loss. Despite initial challenges, Stone finds a rare mutation in a gene related to tRNA, crucial for protein synthesis. This mutation is unique to Sam, but further research identifies two other patients with similar mutations. Stone uses zebrafish models to confirm the mutation's role in RP and plans a gene therapy to halt Sam's vision loss.

What condition was Sam Walker diagnosed with during his eye check-up?

• Retinitis Pigmentosa

• Cataracts

• Macular Degeneration

• Glaucoma

What is the primary cause of retinitis pigmentosa?

• Viral infection

• Nutritional deficiency

• Inherited genetic mutation

• Environmental factors

What is Dr. Edwin Stone's role in Sam's treatment?

• He is a surgeon performing eye surgery

• He is a genetic researcher identifying the mutated gene

• He is a therapist providing counseling

• He is a pharmacist prescribing medication

Why was it challenging to find the mutation in Sam's genes?

• The mutation was in a newly discovered gene

• The mutation was in a well-known gene

• The mutation was easily identifiable

• The mutation was not related to RP

What role does tRNA play in the body?

• It stores genetic information

• It fights infections

• It helps in protein synthesis

• It transports oxygen

How did Dr. Stone validate his findings about the mutation?

• By testing on mice

• By using zebrafish as a model organism

• By conducting clinical trials on humans

• By analyzing plant cells

What was the significance of finding two other patients with similar mutations?

• It provided stronger evidence for the gene's role in RP

• It indicated the mutation was harmless

• It confirmed the mutation was common

• It showed the mutation was not related to RP

What is the goal of the gene therapy being developed for Sam?

• To change eye color

• To completely restore lost vision

• To halt further vision loss

• To improve night vision

Has gene therapy been used for other conditions before?

• Yes, but only for non-genetic diseases

• No, it is still in experimental stages

• Yes, for other types of blindness and genetic diseases

• No, it is a new concept

What is Sam's outlook on the gene therapy being developed?

• He is hopeful and trusts Dr. Stone

• He is skeptical about its success

• He is indifferent to the outcome

• He is planning to seek alternative treatments