What is this pedigree and example of Autosomal dominant auto

What is this pedigree and example of? Autosomal dominant autosomal recessive X-linked dominant X-linked recessive

Solution

This is a case of Autosomal recessive. Cannot be dominant as two unaffected parents could have affected offspring as they inherit two mutated genes, one from each parent. These disorders are usually passed on by two carriers. For example cystic fibrosis

Autosomal dominant: can\'t be possible as affected parents cannot have unaffected offsprings.

X-linked recessive: affected sons result from affected mother.

X-linked dominant: affected daughters result from affected father.