inherited trait

intext citation, references

6.A dominantly inherited trait affects a child and his grandmother, but neither parent. This best illustrates which of the following principles?

a. Variable expressivity

b. New mutation

c. Somatic mosaicism

d. Nonpenetrance

e. Germline mosaicism

7.Two parents with autosomal recessive albinism have a child who does not have albinism. This is best explained by:

a. An incorrect diagnosis in one parent

b. Misattributed paternity

d. Reversion of one of the mutant alleles to wild type

e. Mosaicism in one parent