Answer:
The answer is c. autosomal dominant
Explanation:
Distinction between dominant and recessive:
- As evident from the pedigree, dominant traits never skip a generation.
- Recessive traits skip generations.
- If an affected individual has unaffected parents, the trait is recessive as one of them must be the carrier (heterozygous) but does not have the disease.
- Therefore, considering all the above criteria, this is definitely a dominant trait.
Distinction between autosomal and X-linked Pedigrees:
- Autosomal traits affect both males and females equally.
- X-linked recessive traits are more likely to affect males than females.
- X-linked dominant traits are more likely to affect females. But if a male is affected, all of his daughters will be affected but all his sons will be healthy.
- Considering above criteria, the trait is autosomal.
- Therefore, the pedigree represents an autosomal dominant trait.
