Question

question 10
the pedigree below represents the segregation of a trait that follows wich pattern of inheritance?
a. autosomal dominant
b. autosomal recesive
c. x - linked recessive
d. x - linked dominant

Explanation:

Autosomal dominant inheritance means that a single copy of the mutant gene is sufficient to cause the trait. In this pedigree, if it were autosomal recessive, two copies of the mutant gene would be needed. For X - linked recessive, males (who have one X chromosome) are more likely to be affected. But in this case, since both males and females are affected in a pattern that is not consistent with X - linked recessive (as in X - linked recessive, usually more males are affected and there are specific patterns like criss - cross inheritance). However, if we assume it is autosomal dominant:

• Affected parents (1 and 2) can pass the trait to their children (5,6).
• Unaffected individuals (7,8) do not pass the trait to their children (10,11,12).

For X - linked dominant, there would be specific patterns related to the X chromosome inheritance in males and females which are not shown here.

Answer:

A. autosomal dominant