Question

Achondroplasia shows which type inheritance

• A. XLR
• B. XLD
• C. Autosomal recessive
• D. Autosomal dominant

Answer 1

The Correct Option is D

Achondroplasia is a genetic disorder that results in dwarfism and is characterized by an abnormality in bone development. This condition is known to follow an autosomal dominant pattern of inheritance. In such a pattern, a single copy of the altered gene in each cell is sufficient to cause the disorder. This means that if an individual inherits the mutated gene from one affected parent, they will likely also express the condition.

Explanation:

1. Autosomal: This term indicates that the gene responsible for the condition is located on one of the 22 pairs of autosomes. Autosomes are the non-sex chromosomes, meaning that both males and females are equally likely to inherit the disorder.

2. Dominant: A dominant inheritance pattern implies that only one copy of the mutated gene is needed for the manifestation of the trait. This is in contrast to autosomal recessive conditions, which require two copies of the mutated gene (one from each parent) to express the condition.

Given this understanding, the correct option for the inheritance pattern of achondroplasia is:

Autosomal dominant