1. The allele for freckles is dominant, and the "no freckles" allele is recessive. What can be said about using the presence or absence of freckles as a paternity test?

2. When stress hormones are released, gene X is turned off. This is an example of

3. Assume that the allele for curly hair (C) is dominant, and the gene for straight hair (c) is homozygous recessive. If both mother and father are heterozygous dominant for curly hair, what is the likelihood their child has straight hair?