1. Alternate Patterns of Inheritance

2. Incomplete dominance – the dominant allele cannot totally hide the recessive, resulting in a blended heterozygote

3. Co-Dominance – 2 dominant alleles expressed at the same time

4. ABO blood type in humans – the alleles for A and for B are both dominant over O

5. Environmental factors – soil pH affects the color of hydrangea flowers

6. Acidic soil makes the flowers blue, basic or alkaline soil makes the flowers pink

7. Environmental factors– temperature and season affect the coat color of arctic foxes

8. Never on the Y Chromosome!!!!!!!
Sex-Linked (X-linked) – traits that are found on the X Chromosome (NOT Y)
XY – male XX – female
B – no hairloss b – baldness
XbY – male with the gene for baldness XBXb – heterozygous female
Never on the Y Chromosome!!!!!!!