Question

You are constructing a human pedigree for a particular disease and observe that every generation shows the trait. This suggests that the trait is?

Answer 1

Answer: Autosomal Dominant Trait

Explanation: Autosomal dominant trait

1. Appears in both sexes with equal frequency

2. Both sexes transmit the trait to their offspring

3. Does not skip generations

4. Affected offsprings must have an affected parent unless they possess a new mutation

5. When one parent is affected (heterozygous) and the other parent is unaffected, approximately ½ of the offsprings will be affected

6. Unaffected parents do not transmit the trait