What answer are you looking for here? The sentence is grammatically correct.
The human eye color is an incompletely dominant trait that follows Mendelian inheritance patters a polygenic trait that follows Mendelian inheritance patters.
Answer:
She could include more reasons she is hesitant to assist Grandma June, allowing suspense to build as the reader begins to believe she will not help.
Explanation:
I was about to say the last one but then the reader would be confused who Grandma June is more of then having suspense.