What characterizes the trait inheritance in a direct F1 generation Westiepoo cross?

Answer

Traits are most unpredictable, being a true 50/50 lottery.

The F1 generation represents the immediate offspring resulting from breeding a purebred Westie with a purebred Poodle, meaning the genetic contribution is theoretically split exactly fifty percent from each parent line. Because of this perfect division, the expression of physical and temperamental traits is highly variable and unpredictable among siblings in the same litter. One puppy might strongly display the wiry coat and bold stance of the terrier, while another might closely resemble a Miniature Poodle with only subtle tenacity inherited from the Westie side. This variability decreases in subsequent generations (like F2 or F1b) as breeding aims to stabilize desired traits.

What characterizes the trait inheritance in a direct F1 generation Westiepoo cross?
hybridTerrierPoodleCanineWestiepoo