Question

The pedigree below traces a trait through a family. Filled in circles and square show affected individuals. The inheritance of this trait by individual III-3 exemplifies ______?

1) Autosomal dominant inheritance
2) Autosomal recessive inheritance
3) X-linked dominant inheritance
4) X-linked recessive inheritance

Answer 1

The inheritance of this trait by individual III-3 exemplifies X-linked recessive inheritance.

Step-by-step explanation:

The inheritance of this trait by individual III-3 exemplifies X-linked recessive inheritance.

From the provided information, we can determine that males (XY) are more likely to have the trait in sex-linked inheritance, and it is usually recessive. In the pedigree, individual III-3 is male (square) and affected, indicating that this trait is inherited in an X-linked recessive manner.