A Pedigree Was Examined Over Four Generations of a Family

Multiple Choice

A pedigree was examined over four generations of a family with an abnormal rate of genetic disease. Scientists observed that males and females alike were affected by the disease but only when their mother was also affected. The children of affected males were all normal. All the children of affected females were affected. Which of the following describes this inheritance pattern?

A) Mitochondrial related
B) Autosomal dominant
C) Autosomal recessive
D) Sex linked