To solve this problem, we need to identify the correct genetic inheritance pattern for each condition listed in the options. Let's analyze each option:$\newline \bullet$Option 1: Phenylketonuria - Autosomal dominant trait$\newline$ - Phenylketonuria (PKU) is actually an autosomal recessive disorder, not dominant.$\newline$ - Therefore, this option is incorrect.$\newline \bullet$Option 2: Sickle cell anaemia - Autosomal recessive trait, chromosome-11$\newline$ - Sickle cell anaemia is indeed an autosomal recessive disorder.$\newline$ - The gene responsible for sickle cell anaemia is located on chromosome 11.$\newline$ - Therefore, this option is correct.$\newline \bullet$Option 3: Thalassemia - X linked$\newline$ - Thalassemia is not an X-linked disorder; it is typically autosomal recessive.$\newline$ - Therefore, this option is incorrect.$\newline \bullet$Option 4: Haemophilia - Y linked$\newline$ - Haemophilia is not Y-linked; it is an X-linked recessive disorder.$\newline$ - Therefore, this option is incorrect.$\newline$Based on the analysis, the correct match is:$\newline$Option 2: Sickle cell anaemia - Autosomal recessive trait, chromosome-11$\newline$This corresponds to the correct option, which is Option 2.