<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 2-year-old male is referred to a geneticist for developmental delay and intellectual disability. He was hypotonic at birth and his parents are concerned that he tries to eat everything, including erasers and chalk. Physical exam is remarkable for severe obesity and hypogonadism. Genetic analysis reveals that he has one mutated allele and one normal allele at the gene of interest. Which of the following is the most likely explanation for why this patient is affected despite having a normal allele?? A: Autosomal dominant inheritance pattern, B: Imprinting, C: Locus heterogeneity, D: Uniparental disomy, E: X-linked inheritance pattern,  <response>: This is a question about genetic disorders in a 2-year-old male with developmental delay, intellectual disability, hypotonia, severe obesity, hypogonadism, and pica. The key information is that genetic analysis revealed he has one mutated allele and one normal allele at a gene of interest, yet he is affected by the disorder. The choices describe different genetic mechanisms that could explain how he could be affected despite having one normal allele. Based on the information provided, imprinting seems the most likely explanation. Imprinting is an epigenetic phenomenon where only one allele either the maternal or paternal allele is expressed, while the other allele is silenced. So even though this patient has one normal allele, if that normal allele is imprinted and not expressed, the mutated allele would be solely responsible for the phenotype.B: Imprinting 