Which of the following is the most likely inheritance pattern in the pedigree given below –
It is an X-linked dominant pattern of inheritance.
The features which suggest the X-linked dominant pattern of inheritance are-
A single abnormal X chromosome is sufficient to express the disease.
All of the female offsprings of a diseased male XY will receive the abnormal X chromosome and express the disease, whereas none of the male offspring to the deceased father will have the disease (as sons don't receive X chromosome from their father).
A diseased mother can transmit the abnormal X chromosome to both daughter and sons equally.
Autosomal dominant
Mitochondrial
Autosomal recessive
X–linked dominant