Question

Please HELP!!!!!!!

Refer to the family pedigree shown here. In generation I, one parent is affected by the gene mutation and one parent isn't. In generation II, all three children are affected by the gene mutation. What can you conclude about this gene mutation?

Answer 1

What can be concluded about this genetic mutation is that it is inherited as a dominant trait.

Step-by-step explanation:

In the case that one of the parents has a mutation whose inheritance pattern is dominant —which is rare— all the descendants will have the same mutation, since this gene will necessarily be expressed.

A dominant allele is one whose presence produces the phenotypic expression of the characteristic it determines. When the mutation is dominant, it will always be expressed in the descendants.

Hungtinton's disease and achondroplasia are examples of mutations with an autosomal dominant inheritance pattern.