An example in humans of a disease or syndrome that can occur at higher frequency when a deleted copy of a gene is inherited is
A)triplolethal.
B)scarlet eyes.
C)retinoblastoma.
D)cataracts.

Question

Quizplus · Accepted Answer

Retinoblastoma is a rare eye cancer that occurs in infants and young children. It is caused by a mutation in the RB1 gene. In about 40% of cases, the mutation is inherited in an autosomal dominant pattern, meaning one copy of the gene is already mutated. If a child inherits a second mutation (loss of heterozygosity) or deletion of the remaining normal copy of the gene, they develop retinoblastoma at a higher frequency.

An Example in Humans of a Disease or Syndrome That