An affected mother (filled circle) has children with an unaffected father; all three children (regardless of sex) are affected.
Which mode of inheritance best fits the pedigree?
- A
Autosomal recessive
- B
Y-linked
- Ccheck_circle
Mitochondrial
- D
X-linked dominant
Explanation
Mitochondrial DNA is maternally inherited: an affected mother transmits the trait to ALL her offspring, while affected fathers do not pass it on.