Question

which represents polygenic inheritance of traits?
a cow that has red and white dominant coloring
a mix of blue, green, and brown eye colors
a plant that has pink flowers produced from a plant that has red flowers and a plant that has white flowers
a plant that has green seeds produced from a plant that has yellow seeds and a plant that has green seeds

Explanation:

1. First, recall what polygenic inheritance is: traits controlled by multiple genes, resulting in a range of phenotypes (like eye color, skin color, height).
2. Analyze each option:

• "a cow that has red and white dominant coloring": This sounds like codominance (both traits expressed), not polygenic.
• "a mix of blue, green, and brown eye colors": Eye color is a classic example of polygenic inheritance, as multiple genes influence it, leading to a range of colors (blue, green, brown, etc.).
• "a plant that has pink flowers...": This is incomplete dominance (blending of two traits), not polygenic.
• "a plant that has green seeds...": This is likely a case of simple Mendelian inheritance (dominant/recessive), not polygenic.

Answer:

a mix of blue, green, and brown eye colors